PCF1178CU/15 [NXP]
IC LCD CLOCK, UUC28, DIE-28, Clock IC;型号: | PCF1178CU/15 |
厂家: | NXP |
描述: | IC LCD CLOCK, UUC28, DIE-28, Clock IC 汽车仪表 电池 CD 商用集成电路 振荡器 |
文件: | 总22页 (文件大小:153K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
PCF1178C
4-digit duplex LCD car clock
1997 Apr 16
Product specification
Supersedes data of September 1993
File under Integrated Circuits, IC16
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
FEATURES
GENERAL DESCRIPTION
• Internal voltage regulator is electrically programmable
for various LCD voltages
The PCF1178C is a single chip, 4.19 MHz CMOS car clock
circuit providing hours, minutes and seconds functions.
It is designed to drive a 4-digit duplex liquid crystal display
(LCD).
• Time calibration is electrically programmable
(no trimming capacitor required)
Two external single-pole, single-throw switches will
accomplish all time setting functions. Time calibration and
voltage regulator are electrically programmable via an
on-chip EEPROM. The circuit is battery-operated via an
internal voltage regulator and an external resistor.
• LCD voltage adjusts with temperature for good contrast
• 4.19 MHz oscillator
• 12-hour or 24-hour mode
• Operating ambient temperature: −40 to +85 °C
• 28-lead plastic SMD (SO28)
• 1 Hz set mode.
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
DESCRIPTION
VERSION
PCF1178CT
SO28
plastic small outline package; 28 leads; body width 7.5 mm(1)
uncased chip in tray(2)
chip-on-film frame carrier (FFC)(2)
unsawn wafer(2)
SOT136-1
PCF1178CU
PCF1178CU/10
PCF1178CU/5
−
−
−
−
−
−
Notes
1. See Fig.1 and Chapter “Package outline” for pin layout and package details.
2. See Chapter “Chip dimensions and bonding pad locations” for pad layout and package details.
1997 Apr 16
2
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
PINNING
SYMBOL PIN
DESCRIPTION
backplane 1
BP1
1
2
3
4
5
6
7
8
9
BP2
backplane 2
AM/PM
A2/ADEG1
B1/C1
F2/E2
G2/D2
B2/C2
A4/COL
F3/E3
G3/AD3
B3/C3
F4/E4
G4/D4
B4/C4
S2
segment driver
segment driver
segment driver
segment driver
segment driver
segment driver
segment driver
1
2
3
4
5
6
7
8
9
S1
BP1
BP2
28
27 DATA
AM/PM
A2/ADEG1
B1/C1
26 OSC IN
25 OSC OUT
24
V
10 segment driver
SS
11 segment driver
23 MODE
F2/E2
12 segment driver
V
G2/D2
22
PP
PCF1178CT
13 segment driver
21 TS
B2/C2
14 segment driver
A4/COL
20 ENABLE
15 segment driver
V
F3/E3 10
19
DD
16 minute adjustment input
17 EEPROM select input
18 colon option input
G3/AD3 11
18 FLASH
17 SEL
16 S2
SEL
12
FLASH
VDD
B3/C3
19 positive supply voltage
20 enable input (for S1 and S2)
21 test speed-up mode input
22 programming voltage input
23 12/24-hour mode select input
24 negative supply voltage
25 oscillator output
F4/E4 13
G4/D4 14
ENABLE
TS
15
B4/C4
MSB229
VPP
MODE
VSS
OSC OUT
OSC IN
DATA
S1
26 oscillator input
27 EEPROM data input
28 hour adjustment input
Fig.1 Pin configuration, PCF1178CT, (SO28).
1997 Apr 16
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Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
The average voltages across the segments are:
FUNCTIONAL DESCRIPTION AND TESTING
Outputs
1. VON(RMS) = 0.79 VDD
2. VOFF(RMS) = 0.35 VDD
.
The circuit outputs 1 : 2 multiplexed data (duplex) to the
LCD. Generation of BP1 and BP2 (three-level backplane
signals) and the output signals are shown in Fig.4.
A1
G1
A2
G2
A3
A4
G4
B1 F2
C1 E2
B2
C2
F3
B3 F4
B4
C4
G3
AM
PM
COL
E1
E3
C3 E4
D1
D2
D3
D4
MLB251
Fig.2 Segment designation of LCD.
V
DD
/2
BP1
BP2
V
V
DD
0
V
DD
/2
TIME
DD
PM
0
MSA993
(a)
SEGMENT
1
SEGMENT
2
V
DD
ON
OFF
ON
ON
a. 12-hour mode.
0
V
V
V
DD
ON
0
TIME
DD
OFF
OFF
MSA994
0
(b)
DD
OFF
0
b. 24-hour mode.
15.625 ms
MSB226
Fig.3 Typical displays.
Fig.4 Backplane and output signals.
1997 Apr 16
4
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
LCD voltage (see Fig.5)
The adjustable voltage regulator controls the supply
voltage (see Section “LCD voltage programming”) in
relation to temperature for good contrast, for example
when VDD = 4.5 V at +25 °C, then:
VDD = 3 to 4 V at +85 °C.
VDD = 5 to 6 V at −40 °C.
MSA995
−8
V
SS
(V)
−6
(3)
(2)
(1)
−4
−2
0
40
0
40
80
120
o
T ( C)
(1) Programmed to 4.0 V at 25 °C (value within the specified operating range).
(2) Programmed to 4.5 V at 25 °C (value within the specified operating range).
(3) Programmed to 5.0 V at 25 °C (value within the specified operating range).
Fig.5 Regulated voltage as a function of temperature (typical).
1997 Apr 16
5
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
12/24-hour mode
Segment test/reset
Operation in 12-hour or 24-hour mode is selected by
connecting MODE to VDD or VSS respectively. If MODE is
left open-circuit and a reset occurs, the mode will change
from 12-hour to 24-hour mode or vice versa.
When S1 and S2 are connected to VSS, all LCD segments
are switched ON. Releasing switches S1 and S2 resets the
display. No reset occurs when DATA is connected to VSS
(overlapping S1 and S2).
Power-on
Test mode
After connecting the supply, the start-up mode is:
MODE connected to VDD: 12-hour mode, 1:00 AM.
MODE connected to VSS: 24-hour mode, 0:00.
MODE left open-circuit: 24-hour mode, 0:00 or 1:00.
When TS is connected to VDD, the device is in normal
operating mode. When connecting TS to VSS all counters
(seconds, minutes and hours) are stopped, allowing quick
testing of the display via S1 and S2 (debounce and
auto-increment times are 64 times faster). TS has a
pull-up resistor but for reasons of safety it should be
connected to VDD
.
Colon
If FLASH is connected to VDD the colon pulses at 0.5 Hz.
If FLASH is connected to VSS the colon is static.
EEPROM
VPP has a pull-up resistor but for reasons of safety it should
be connected to VDD
.
Time setting
Switch inputs S1 and S2 have a pull-up resistor to facilitate
the use of single-pole, single-throw contacts. A debounce
circuit is incorporated to protect against contact bounce
and parasitic voltages.
LCD voltage programming
To enable LCD voltage programming, SEL is set to
open-circuit and a level of VDD − 5 V is applied to VPP (see
Fig.6). The first pulse (tE) applied to the DATA input clears
the EEPROM to give the lowest voltage output. Further
pulses (tL) will increment the output voltage by steps of
typically 150 mV (Tamb = 25 °C). For programming,
measure VDD − VSS and apply a store pulse (tW) when the
required value is reached. If the maximum number of steps
(n = 31) is reached and an additional pulse is applied the
voltage will return to the lowest value.
Set enable
Inputs S1 and S2 are enabled by connecting ENABLE to
VDD or disabled by connecting to VSS
.
Set hours
When S1 is connected to VSS the hours displayed
advances by one and after one second continues with one
advance per second until S1 is released (auto-increment).
Time calibration
To compensate for the tolerance in the quartz crystal
frequency which has been positively offset (nominal
deviation +60 × 10−6) by capacitors at the oscillator input
and output, a number (n) of 262144 Hz pulses are
inhibited every second of operation.
Set minutes
When S2 is connected to VSS the time displayed in
minutes advances by one and after one second continues
with two advances per second until S2 is released
(auto-increment). In addition to minute correction, the
seconds counter is reset to zero.
1997 Apr 16
6
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
The number (n) is stored in a non-volatile memory which is achieved by the following steps (see Fig.6):
1. Set SEL to VSS and a level of VDD − 5 V to VPP
2. The quartz-frequency deviation ∆f/f is measured and (n) is calculated (see Table 1)
3. A first pulse tE is applied to the DATA input clears the EEPROM to give the highest backplane frequency
4. The calculated pulses (n) are entered in (tH, tL). If the maximum backplane period is reached and an additional pulse
is applied the period will return to the lowest value.
5. The backplane period is controlled and when correct fixed by applying the store pulse tW
6. Release SEL and VPP.
Table 1 Time calibration (∆t = 7.63 µs; SEL at VSS
)
OSCILLATOR-FREQUENCY DEVIATION
NUMBER OF PULSES
BACKPLANE PERIOD
(ms)
∆f/f
(× 10−6)
(n)
0
0
1
2
3
.
15.625
+3.8
15.633
+7.6
15.641
+11.4
15.648
.
.
.
.
.
.
.
.
+117.8
31
15.861
1997 Apr 16
7
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
50 µs
50 µs
V
DD
V
PP
V
V
5 V
50 µs
DD
DD
50 µs
clears cells
incrementing counters
store pulse
V
DD
DATA
5 V
t
t
t
t
t
E
H
L
H
L
n
t
t
H
W
t
t
, t
=
= 4 to 6 ms
E
H
L
W
1 µs
t
= 1 to 1.5 µs
0 V
pulse
generators
V
SEL
PP
V
SS
V
DD
DATA
PCF1178C
OSC OUT
OSC IN
C
47 µF
ext
V
SS
R
MSB230
12 V
6.8 kΩ
Fig.6 Programming diagram.
1997 Apr 16
8
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
supply voltage
CONDITIONS
with respect to VSS
MIN.
MAX.
UNIT
VDD
IDD
VI
−
−
8
3
V
supply current
input voltage
VSS = 0 V; note 1
mA
V
all pins except VPP and DATA
pins VPP and DATA
−0.3
−3
VDD + 0.3
VDD + 0.3
+85
V
Tamb
Tstg
operating ambient temperature
storage temperature
−40
−55
°C
°C
+125
Note
1. Connecting the supply voltage with reverse polarity, will not harm the circuit, provided the current is limited to 10 mA
by an external resistor.
HANDLING
Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is
advisable to take handling precautions appropriate to handling MOS devices. Advice can be found in
“Data Handbook IC16, General, Handling MOS Devices”.
1997 Apr 16
9
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
CHARACTERISTICS
VDD = 3 to 6 V; VSS = 0 V; Tamb = −40 to +85 °C; crystal: f = 4.194304 MHz; Rs = 50 Ω; CL = 12 pF; maximum
frequency tolerance = ±30 × 10−6; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
VDD
supply voltage
voltage regulator programmed
to 4.5 V at Tamb = 25 °C
3
−
−
6
V
∆VDD
supply voltage variation
S1 or S2 closed
−
50
−
mV
%/K
mV/K
µA
TC
supply voltage variation due
to temperature
−
−0.35
−16
950
−
VDD = 4.5 V
note 1
−
−
IDD
supply current
capacitance
700
47
−
CEXT
external capacitor
−
µF
Oscillator
tosc
∆f/f
∆f/f
Rfb
Ci
start time
−
−
200
ms
frequency deviation
frequency stability
feedback resistance
input capacitance
output capacitance
nominal n = 0
0
60 × 10−6 110 × 10−6
∆VDD = 100 mV
−
−
1 × 10−6
300
−
1000
16
3000
kΩ
pF
pF
−
−
Co
−
27
Inputs
RO
RO
IIL
pull-up resistance
S1, S2, TS, SEL and DATA
45
100
−
90
300
−
180
1000
2
kΩ
kΩ
µA
ms
pull-up/pull-down resistance MODE
leakage current
debounce time
ENABLE, FLASH
td
S1 and S2 only
30
65
100
VPP programming voltage
IO2 output current
VPP = VDD − 5 V
70
−
700
µA
µA
during programming
−
500
−
Backplane (high and low levels)
RBP
output resistance
±100 µA
−
−
−
−
−
−
3
kΩ
kΩ
mV
Segment
RSEG
output resistance
±100 µA
5
LCD
Voffset(DC) DC offset voltage
200 kΩ/1 nF
50
Note
1. A suitable resistor (R) must be selected (example):
a) VDD = 5 V; R max. (12 V − 5 V)/700 µA = 10 kΩ.
b) VDD = 5 V; R typ. (12 V − 5 V)/900 µA = 7.8 kΩ (more reserve).
c) IDD must not exceed 3 mA.
1997 Apr 16
10
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
CHIP DIMENSIONS AND BONDING PAD LOCATIONS
y
G3/AD3
B3/C3
F4/E4
A2/ADEG1
AM/PM
BP2
G4/D4
BP1
PCF1178CU
2.92 mm
B4/C4
S1
DATA
S2
SEL
OSC IN
FLASH
OSC OUT
0
0
x
MSB228
1.92 mm
Chip area: 5.61 mm2.
Bonding pad dimensions: 110 µm × 110 µm.
Chip thickness: 381 ±25 µm.
Fig.7 Bonding pad locations, PCF1178CU; 28 terminals.
1997 Apr 16
11
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
Table 2 Bonding pad locations (dimensions in µm)
All x/y coordinates are referenced to the bottom left pad (VDD), see Fig.7.
PAD
x
y
PAD
G4/D4
x
y
S1
1490
1490
1490
1490
1352
969
881
639
408
188
0
−86
−86
1588
1808
2028
2248
2476
2476
2476
2476
2476
2476
2248
2028
1808
1588
DATA
OSC IN
OSC OUT
VSS
F4/E4
B3/C3
G3/AD3
F3/E3
−86
−86
−48
MODE
VPP
0
A4/COL
B2/C2
G2/D2
F2/E2
352
770
0
552
TS
506
0
752
ENABLE
VDD
306
0
952
0
0
B1/C1
A2/ADEG1
AM/PM
BP2
1352
1490
1490
1490
1490
FLASH
SEL
−86
188
408
628
848
−175
−86
S2
−86
B4/C4
−86
BP1
chip corner (max. value)
−305
1997 Apr 16
12
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
APPLICATION INFORMATION
BP1
BP2
1
2
3
segment drivers
to LCD
DECODER
DECODER
15
PCF1178C
AM/PM
COUNTER
HOURS
COUNTER
MINUTES
COUNTER
SECONDS
COUNTER
OSC IN 26
ADJUSTABLE
DIVIDER
12 V
6.8 kΩ
OSCILLATOR
OSC OUT 25
SEL 17
I
EEPROM
V
DD
DATA 27
22
PP
S1
28
18 FLASH
21 TS
S2
16
CONTROL
LOGIC
23
ENABLE
MODE
20
V
SS 24
VOLTAGE
REGULATOR
V
DD
19
C
ext
(1)
47 µF
100 nF
MSB227
(1) To be placed close to the IC.
Fig.8 Typical application diagram.
1997 Apr 16
13
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
PACKAGE OUTLINE
SO28: plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
D
E
A
X
c
y
H
v
M
A
E
Z
28
15
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
14
w
detail X
e
M
b
p
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
max.
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.30
0.10
2.45
2.25
0.49
0.36
0.32
0.23
18.1
17.7
7.6
7.4
10.65
10.00
1.1
0.4
1.1
1.0
0.9
0.4
mm
2.65
1.27
0.050
1.4
0.25
0.01
0.25
0.1
0.25
0.01
8o
0o
0.012 0.096
0.004 0.089
0.019 0.013 0.71
0.014 0.009 0.69
0.30
0.29
0.42
0.39
0.043 0.043
0.016 0.039
0.035
0.016
inches 0.10
0.055
0.01 0.004
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
91-08-13
95-01-24
SOT136-1
075E06
MS-013AE
1997 Apr 16
14
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
SOLDERING
Introduction
Wave soldering
Wave soldering techniques can be used for all SO
packages if the following conditions are observed:
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream end.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Reflow soldering
Reflow soldering techniques are suitable for all SO
packages.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Repairing soldered joints
Fix the component by first soldering two diagonally-
opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
1997 Apr 16
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Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Apr 16
16
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
NOTES
1997 Apr 16
17
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
NOTES
1997 Apr 16
18
Philips Semiconductors
Product specification
4-digit duplex LCD car clock
PCF1178C
NOTES
1997 Apr 16
19
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Tel. +852 2319 7888, Fax. +852 2319 7700
Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,
Tel. +65 350 2538, Fax. +65 251 6500
Colombia: see South America
Czech Republic: see Austria
Slovakia: see Austria
Slovenia: see Italy
Denmark: Prags Boulevard 80, PB 1919, DK-2300 COPENHAGEN S,
Tel. +45 32 88 2636, Fax. +45 31 57 0044
South Africa: S.A. PHILIPS Pty Ltd., 195-215 Main Road Martindale,
2092 JOHANNESBURG, P.O. Box 7430 Johannesburg 2000,
Tel. +27 11 470 5911, Fax. +27 11 470 5494
Finland: Sinikalliontie 3, FIN-02630 ESPOO,
Tel. +358 9 615800, Fax. +358 9 61580920
South America: Rua do Rocio 220, 5th floor, Suite 51,
04552-903 São Paulo, SÃO PAULO - SP, Brazil,
Tel. +55 11 821 2333, Fax. +55 11 829 1849
France: 4 Rue du Port-aux-Vins, BP317, 92156 SURESNES Cedex,
Tel. +33 1 40 99 6161, Fax. +33 1 40 99 6427
Spain: Balmes 22, 08007 BARCELONA,
Tel. +34 3 301 6312, Fax. +34 3 301 4107
Germany: Hammerbrookstraße 69, D-20097 HAMBURG,
Tel. +49 40 23 53 60, Fax. +49 40 23 536 300
Sweden: Kottbygatan 7, Akalla, S-16485 STOCKHOLM,
Tel. +46 8 632 2000, Fax. +46 8 632 2745
Greece: No. 15, 25th March Street, GR 17778 TAVROS/ATHENS,
Tel. +30 1 4894 339/239, Fax. +30 1 4814 240
Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,
Tel. +41 1 488 2686, Fax. +41 1 481 7730
Hungary: see Austria
India: Philips INDIA Ltd, Shivsagar Estate, A Block, Dr. Annie Besant Rd.
Worli, MUMBAI 400 018, Tel. +91 22 4938 541, Fax. +91 22 4938 722
Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1,
TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874
Indonesia: see Singapore
Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,
209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260,
Tel. +66 2 745 4090, Fax. +66 2 398 0793
Ireland: Newstead, Clonskeagh, DUBLIN 14,
Tel. +353 1 7640 000, Fax. +353 1 7640 200
Israel: RAPAC Electronics, 7 Kehilat Saloniki St, PO Box 18053,
TEL AVIV 61180, Tel. +972 3 645 0444, Fax. +972 3 649 1007
Turkey: Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL,
Tel. +90 212 279 2770, Fax. +90 212 282 6707
Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3,
20124 MILANO, Tel. +39 2 6752 2531, Fax. +39 2 6752 2557
Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7,
252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461
Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,
Tel. +81 3 3740 5130, Fax. +81 3 3740 5077
United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes,
MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421
Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL,
Tel. +82 2 709 1412, Fax. +82 2 709 1415
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR,
Tel. +60 3 750 5214, Fax. +60 3 757 4880
Uruguay: see South America
Vietnam: see Singapore
Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905,
Tel. +9-5 800 234 7381
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+381 11 635 777
Middle East: see Italy
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Internet: http://www.semiconductors.philips.com
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
© Philips Electronics N.V. 1997
SCA54
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
417087/1200/02/pp20
Date of release: 1997 Apr 16
Document order number: 9397 750 01531
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PCF1178C; 4-digit
duplex LCD car
clock
download datasheet
Download datasheet
Products
General description
Features
Datasheet
Applications
Buy online
Parametrics
Email/translate
Block diagram
Products & packages
Support & tools
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General description
The PCF1178C is a single chip, 4.19 MHz CMOS car clock circuit providing hours, minutes and seconds
functions. It is designed to drive a 4-digit duplex liquid crystal display (LCD).
Catalog by
System
•
Cross-reference
Packages
•
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Two external single-pole, single-throw switches will accomplish all time setting functions. Time calibration and
voltage regulator are electrically programmable via an on-chip EEPROM. The circuit is battery-operated via an
internal voltage regulator and an external resistor.
End of Life
information
Distributors Go
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•
•
Features
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Internal voltage regulator is electrically programmable for various LCD voltages
Time calibration is electrically programmable (no trimming capacitor required)
LCD voltage adjusts with temperature for good contrast
4.19 MHz oscillator
12-hour or 24-hour mode
Operating ambient temperature: -40 to +85 °C
28-lead plastic SMD (SO28)
Models
•
•
SoC solutions
1 Hz set mode.
Datasheet
Type number Title
Publication release Datasheet status
date
Page
count
File size Datasheet
(kB)
PCF1178C
4-digit
duplex LCD
car clock
4/16/1997
Product specification 20
97
Download
Parametrics
Type number Package
Application
FUNCTION Operating No. of
temp.(Cel) Pins
Clock Type
CMOS ICs for Clocks,
4-digit
SOT136-1 (SO28)
PCF1178CT
Watches and Real Time Clocks
Clocks
-40~85
-40~85
28
duplex LCD
Car Clock
CMOS ICs for Clocks,
Watches and Real Time Clocks
Clocks
4-digit
duplex LCD
Car Clock
PCF1178CU/10 uncased die
Products, packages, availability and ordering
Type number North
American
type number
Ordering code Marking/Packing Package Device
Buy online
IC packing info
(12NC)
status
SOT136-
Standard Marking
* Tube
1 (SO28) Full production
PCF1178CT
PCF1178CTD 9350 060 10112
Standard Marking SOT136-
PCF1178CTD-
1 (SO28) Full production
9350 060 10118 * Reel Pack,
T
SMD, 13"
No Marking *
Chips on Wafer,
Pre-Sawn, On
FFC
Uncased
die
Full production
PCF1178CU/10
9351 826 30005
-
Products in the above table are all in production. Some variants are discontinued; click here for information on
these variants.
Similar products
PCF1178C links to the similar products page containing an overview of products that are similar in function
or related to the type number(s) as listed on this page. The similar products page includes products from the same
catalog tree(s), relevant selection guides and products from the same functional category.
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