AK93C55B [AKM]
1K / 2K / 4K / 8KBIT SERIAL CMOS EEPROM; 1K / 2K / 4K / 8Kbit串行CMOS EEPROM的
| 型号： | AK93C55B |
| 厂家： | 
ASAHI KASEI MICROSYSTEMS |
| 描述： | 1K / 2K / 4K / 8KBIT SERIAL CMOS EEPROM |
| 文件： | 总14页 (文件大小：166K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ASAHI KASEI
[AK93C45B/55B/65B/75B]
AK93C45B / 55B / 65B / 75B
1K / 2K / 4K / 8Kbit Serial CMOS EEPROM
Features
ꢀ ADVANCED CMOS EEPROM TECHNOLOGY
ꢀ READ/WRITE NON-VOLATILE MEMORY
ꢀ
ꢀ WIDE VCC OPERATION
Vcc = 1.8V ꢁ 5.5V
ꢀ AK93C45B
AK93C55B
AK93C65B
AK93C75B
1024 bits, 64 ꢂ 16 organization
2048 bits, 128 ꢂ 16 organization
4096 bits, 256 ꢂ 16 organization
8192 bits, 512 ꢂ 16 organization
ꢀ SERIAL INTERFACE
- Interfaces with popular microcontrollers and standard microprocessors
ꢀ LOW POWER CONSUMPTION
- 0.8ꢀA Max. Standby
ꢀ HIGH RELIABILITY
-Endurance
-Data Retention
: 100K cycles
: 10 years
ꢀ Automatic address increment (READ)
ꢀ Automatic write cycle time-out with auto-ERASE
ꢀ Busy/Ready status signal
ꢀ Software controlled write protection
ꢀ IDEAL FOR LOW DENSITY DATA STORAGE
- Low cost, space saving, 8-pin package (MSOP)
Block Diagram
- 1 -
DAM04E-01
1999/10
ASAHI KASEI
[AK93C45B/55B/65B/75B]
General Description
The AK93C45B/55B/65B/75B is a 1024/2048/4096/8192-bit serial CMOS EEPROM divided into
64/128/256/512 registers of 16 bits each.
The AK93C45B/55B/65B/75B has 4 instructions such as READ, WRITE, EWEN and EWDS. Those
instructions control the AK93C45B/55B/65B/75B.
The AK93C45B/55B/65B/75B can operate full function under wide operating voltage range from 1.8V to 5.5V.
The charge up circuit is integrated for high voltage generation that is used for write operation.
A serial interface of AK93C45B/55B/65B/75B, consisting of chip select (CS), serial clock (SK), data-in (DI)
and data-out (DO), can easily be controlled by popular microcontrollers or standard microprocessors.
AK93C45B/55B/65B/75B takes in the write data from data input pin (DI) to a register synchronously with rising
edge of input pulse of serial clock pin (SK). And at read operation, AK93C45B/55B/65B/75B takes out the
read data from a register to data output pin (DO) synchronously with rising edge of SK.
The DO pin is usually in high impedance state. The DO pin outputs "L" or "H" in case of data output or Busy/Ready
signal output.
Software and Hardware controlled write protection
When Vcc is applied to the part, the part automatically powers up in the ERASE/WRITE Disable state. In the
ERASE/WRITE disable state, execution of WRITE instruction is disabled. Before WRITE instruction is
executed, EWEN instruction must be executed. The ERASE/WRITE enable state continues until EWDS
instruction is executed or Vcc is removed from the part.
Execution of a read instruction is independent of both EWEN and EWDS instructions.
The PE is internally pulled up to VCC. If the PE is left unconnected, the part will accept WRITE, EWEN and
EWDS instructions. AK93C55B/65B/75B
Busy/Ready status signal
After a write instruction, the DO output serves as a Busy/Ready status indicator. After the falling edge of the
CS initiates the self-timed programming cycle, the DO indicates the Busy/Ready status of the chip if the CS is
brought high after a minimum of 250ns (Tcs). DO=logical "0" indicates that programming is still in progress.
DO=logical "1" indicates that the register at the address specified in the instruction has been written with the
new data pattern contained in the instruction and the part is ready for a next instruction.
The Busy/Ready status indicator is only valid when CS is active (high). When CS is low, the DO output goes
into a high impedance state.
The Busy/Ready signal outputs until a start bit (Logic"1") of the next instruction is given to the part.
Type of Products
Model
AK93C45BH
AK93C55BH
AK93C65BH
AK93C75BH
Memory size
1Kbits
Temp.Range
-40 C 85 C
-40 C 85 C
-40 C 85 C
-40 C 85 C
Vcc
Package
1.8V 5.5V
1.8V 5.5V
1.8V 5.5V
1.8V 5.5V
8pin Plastic MSOP
8pin Plastic MSOP
8pin Plastic MSOP
8pin Plastic MSOP
2Kbits
4Kbits
8Kbits
DAM04E-01
1999/10
- 2 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Pin arrangement
Pin Name
CS
Function
Chip Select
SK
Serial Data Clock
Serial Data Input
Serial Data Output
Program Enable
Ground
DI
DO
PE
GND
Vcc
NC
Power Supply
Not Connected
(Note) The PE is internally pulled up to VCC ( R = typ.2.5M , VCC=5V ).
DAM04E-01
1999/10
- 3 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Functional Description
The AK93C45B/55B/65B/75B has 4 instructions such as READ, WRITE, EWEN and EWDS. A valid
instruction consists of a Start Bit (Logic"1"), the appropriate Op Code and the desired memory Address
location.
The CS pin must be brought low for a minimum of 250ns (Tcs) between each instruction when the instruction
is continuously executed.
Instruction Start
Bit
Op
Code
10
Address
Data
Comments
READ
WRITE
EWEN
EWDS
WRAL
1
1
1
1
1
A5-A0
D15-D0
D15-D0
Reads data stored in memory, at specified address.
Writes register.
01
A5-A0
00
11XXXX
00XXXX
01XXXX
Write enable must precede all programming modes.
Disables all programming instructions.
00
00
D15-D0
Writes all registers.
X: Don't care
table 1. Instruction Set for the AK93C45B
Instruction Start
Bit
Op
Code
10
Address
Data
Comments
READ
WRITE
EWEN
EWDS
WRAL
1
1
1
1
1
X A6-A0
D15-D0
D15-D0
Reads data stored in memory, at specified address.
Writes register.
01
X A6-A0
00
11XXXXXX
00XXXXXX
01XXXXXX
Write enable must precede all programming modes.
Disables all programming instructions.
00
00
D15-D0
Writes all registers.
X: Don't care
table 2. Instruction Set for the AK93C55B
Instruction Start
Bit
Op
Code
10
Address
Data
Comments
READ
WRITE
EWEN
EWDS
WRAL
1
1
1
1
1
A7-A0
D15-D0
D15-D0
Reads data stored in memory, at specified address.
Writes register.
01
A7-A0
00
11XXXXXX
00XXXXXX
01XXXXXX
Write enable must precede all programming modes.
Disables all programming instructions.
00
00
D15-D0
Writes all registers.
X: Don't care
table 3. Instruction Set for the AK93C65B
Instruction Start
Bit
Op
Code
10
Address
Data
Comments
READ
WRITE
EWEN
EWDS
WRAL
1
1
1
1
1
XA8-A0
D15-D0
D15-D0
Reads data stored in memory, at specified address.
Writes register.
01
XA8-A0
00
11XXXXXXXX
00XXXXXXXX
Write enable must precede all programming modes.
Disables all programming instructions.
00
00
01XXXXXXXX D15-D0
Writes all registers.
X: Don't care
table 4. Instruction Set for the AK93C75B
(Note) The WRAL instruction are used for factory function test only.
User can't use the WRAL instruction.
The AK93C45B/55B/65B/75B perceives the start bit in the logic"1" and also "01".
DAM04E-01
1999/10
- 4 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Write
The write instruction is followed by 16 bits of data to be written into the specified address. After the last bit of
data is put on the DI pin, the CS pin must be brought low before the next rising edge of the SK clock. This
falling edge of the CS initiates the self-timed programming cycle. The DO indicates the Busy/Ready status of
the chip if the CS is brought high after a minimum of 250ns (Tcs). DO=logical "0" indicates that programming
is still in progress. DO=logical "1" indicates that the register at the address specified in the instruction has
been written with the new data pattern contained in the instruction and the part is ready for a next instruction.
WRITE (AK93C45B)
*Address bit A7 becomes a “don’t care” for AK93C55B.
WRITE (AK93C55B/65B)
WRITE (AK93C75B)
DAM04E-01
1999/10
- 5 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Read
The read instruction is the only instruction which outputs serial data on the DO pin.
Following the Start bit, first Op code and address are decoded, then the data from the selected memory
location is available at the DO pin. A dummy bit (logical "0") precedes the 16-bit data from the selected
memory location. The output data changes are synchronized with the rising edges of the serial clock (SK).
The data in the next address can be read sequentially by continuing to provide clock. The address
automatically cycles to the next higher address after the 16bit data shifted out.
When the highest address is reached, the address counter rolls over to address $00 or $000 allowing the read
cycle to be continued indefinitely.
READ (AK93C45B)
*Address bit A7 becomes a "don't care" for AK93C55B.
READ (AK93C55B/65B)
READ (AK93C75B)
DAM04E-01
1999/10
- 6 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
EWEN / EWDS
When Vcc is applied to the part, the part automatically powers up in the ERASE/WRITE Disable state. In the
ERASE/WRITE disable state, execution of WRITE instruction is disable. Before WRITE instruction is
executed, EWEN instruction must be executed. The ERASE/WRITE enable state continues until EWDS
instruction is executed or Vcc is removed from the part.
Execution of a read instruction is independent of both EWEN and EWDS instructions.
EWEN/EWDS (AK93C45B)
EWEN/EWDS (AK93C55B/65B)
EWEN/EWDS (AK93C75B)
DAM04E-01
1999/10
- 7 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Absolute Maximum Ratings
Parameter
Power Supply
Symbol
VCC
Min
-0.6
-0.6
Max
Unit
V
+7.0
All Input Voltages
VIO
VCC+0.6
V
with Respect to Ground
Ambient storage temperature
Tst
-65
+150
C
Stress above those listed under "Absolute Maximum Ratings" may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in
the operational sections of the specification is not implied. Exposure to absolute
maximum conditions for extended periods may affect device reliability.
Recommended Operating Condition
Parameter
Power Supply
Ambient Operating Temperature
Symbol
VCC
Ta
Min
1.8
-40
Max
5.5
Unit
V
+85
C
DAM04E-01
1999/10
- 8 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Electrical Characteristics
(1) D.C. ELECTRICAL CHARACTERISTICS
AK93C45B/55B/65B
( 1.8V Vcc 5.5V, -40 C Ta 85 C, unless otherwise specified )
Parameter
Symbol
ICC1
Condition
Min.
Max.
4.0
1.5
2.0
0.5
0.2
0.1
0.8
Unit
mA
mA
mA
mA
mA
mA
uA
Current Dissipation
VCC=5.5V, tSKP=1us, *1
VCC=1.8V, 93C45B
ICC2
(WRITE)
tSK=4us,*1
93C55B/65B
Current Dissipation
(READ,EWEN,EWDS)
ICC3
ICC4
ICC5
VCC=5.5V, tSKP=1us, *1
VCC=2.5V, tSKP=2us, *1
VCC=1.8V, tSKP=4us, *1
Current Dissipation
(Standby)
ICCSB VCC=5.5V
*2
Input High Voltage
Input Low Voltage
Output High Voltage
VIH1
VIH2
VIH3
VIL1
VIL2
VIL3
VOH1
2.0
0.8 VCC
0.8 VCC
-0.1
VCC+0.5
VCC+0.5
VCC+0.5
0.8
V
V
V
V
V
V
V
VCC=5V 10%
2.5V VCC 5.5V
1.8V VCC<2.5V
VCC=5V 10%
2.5V VCC 5.5V
1.8V VCC<2.5V
-0.1
0.15 VCC
0.2 VCC
-0.1
2.2
VCC=5V 10%
IOH=-0.4mA
VOH2 2.5V VCC 5.5V
IOH=-0.1mA
V
V
V
V
V
0.8 VCC
0.8 VCC
VOH3 1.8V VCC<2.5V
IOH=-0.1mA
Output Low Voltage
VOL1
VOL2
VOL3
0.4
0.4
0.4
VCC=5V 10%
IOL=1.5mA
2.5V VCC 5.5V
IOL=1.0mA
1.8V VCC<2.5V
IOL=0.1mA
Input Leakage
ILI
VCC=5.5V,VIN=5.5V *3
uA
uA
1.0
1.0
Output Leakage
ILO
VCC=5.5V
VOUT=5.5V,CS=GND
*1: VIN=VIH/VIL,DO=Open
*2: VIN=VCC/GND,CS=GND,DO=Open
*3: CS, SK, DI pin
DAM04E-01
1999/10
- 9 -
ASAHI KASEI
AK93C75B
[AK93C45B/55B/65B/75B]
( 1.8V Vcc 5.5V, -40 C Ta 85 C, unless otherwise specified )
Parameter
Current Dissipation
Symbol
ICC1
ICC2
ICC3
ICC4
Condition
Min.
Max.
4.0
Unit
mA
mA
mA
mA
VCC=5.5V, tSKP=1us, *4
VCC=1.8V, tSKP=4us, *4
VCC=5.5V, tSKP=1us, *4
VCC=1.8V, tSKP=4us, *4
(WRITE)
2.0
Current Dissipation
(READ,EWEN,EWDS)
0.4
0.1
Current Dissipation
(Standby)
ICCSB VCC=5.5V
*5
0.8
uA
Input High Voltage
Input Low Voltage
Output High Voltage
VIH
VIL
VCC+0.5
V
V
V
0.8 VCC
-0.1
0.2 VCC
VOH1 2.5V VCC 5.5V
IOH=-0.1mA
0.8 VCC
VOH2 1.8V VCC<2.5V
IOH=-0.1mA
V
0.8 VCC
Output Low Voltage
VOL1
VOL2
2.5V VCC 5.5V
IOL=1.0mA
0.4
0.4
V
V
1.8V VCC<2.5V
IOL=0.1mA
Input Leakage
ILI
VCC=5.5V,VIN=5.5V *6
uA
uA
1.0
1.0
Output Leakage
ILO
VCC=5.5V
VOUT=5.5V,CS=GND
*4: VIN=VIH/VIL,DO=Open
*5: VIN=VCC/GND,CS=GND,DO=Open
*6: CS, SK, DI pin
DAM04E-01
1999/10
- 10 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
(2) A.C. ELECTRICAL CHARACTERISTICS
( 1.8V Vcc 5.5V, -40 C Ta 85 C, unless otherwise specified )
Parameter
SK Cycle Time
Symbol
tSKP1
tSKP2
tSKP3
Condition
4.5V VCC 5.5V
Min.
1.0
2.0
4.0
500
1.0
2.0
100
0
Max.
Unit
us
us
us
ns
us
us
ns
ns
ns
ns
ns
us
us
ms
2.0V VCC<4.5V
1.8V VCC<2.0V
SK Pulse Width
tSKW1 4.5V VCC 5.5V
tSKW2 2.0V VCC<4.5V
tSKW3 1.8V VCC<2.0V
CS Setup Time
CS Hold Time
tCSS
tCSH
tDIS
Data Setup Time
Data Hold Time
200
200
tDIH
tPD1
tPD2
tPD3
4.5V VCC 5.5V
500
1.0
2.0
10
8
Output delay *7
2.0V VCC<4.5V
1.8V VCC<2.0V
Selftimed Programming Time tE/W1
93C45B/55B/65B
93C75B 4.5V VCC 5.5V
1.8V VCC<4.5V
tE/W2
tE/W3
ms
ms
ns
ns
ns
ns
10
Min CS Low Time
CS to Status Valid
tCS
250
tSV
CL=100pF
500
100
250
tOZ1
tOZ2
2.0V VCC 5.5V
1.8V VCC<2.0V
CS to Output High-Z
*7: CL=100pF
DAM04E-01
1999/10
- 11 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Synchronous DataTiming
The Start of Instruction
The End of Instruction
DAM04E-01
1999/10
- 12 -
ASAHI KASEI
[AK93C45B/55B/65B/75B]
Busy/Ready Signal Output
DAM04E-01
1999/10
- 13 -
IMPORTANT NOTICE
zThese products and their specifications are subject to change without notice. Before
considering any use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM)
sales office or authorized distributor concerning their current status.
zAKM assumes no liability for infringement of any patent, intellectual property, or other
right in the application or use of any information contained herein.
zAny export of these products, or devices or systems containing them, may require an
export license or other official approval under the law and regulations of the country of
export pertaining to customs and tariffs, currency exchange, or strategic materials.
zAKM products are neither intended nor authorized for use as critical components in any
safety, life support, or other hazard related device or system, and AKM assumes no
responsibility relating to any such use, except with the express written consent of the
Representative Director of AKM. As used here:
(a) A hazard related device or system is one designed or intended for life support or
maintenance of safety or for applications in medicine, aerospace, nuclear energy, or
other fields, in which its failure to function or perform may reasonably be expected to
result in loss of life or in significant injury or damage to person or property.
(b) A critical component is one whose failure to function or perform may reasonably be
expected to result, whether directly or indirectly, in the loss of the safety or
effectiveness of the device or system containing it, and which must therefore meet
very high standards of performance and reliability.
zIt is the responsibility of the buyer or distributor of an AKM product who distributes,
disposes of, or otherwise places the product with a third party to notify that party in
advance of the above content and conditions, and the buyer or distributor agrees to
assume any and all responsibility and liability for and hold AKM harmless from any and
all claims arising from the use of said product in the absence of such notification.
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