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PDF ST93CS56 Data sheet ( Hoja de datos )
| Número de pieza | ST93CS56 | |
| Descripción | (ST93CS56 / ST93CS57) 2K 128 x 16 SERIAL MICROWIRE EEPROM | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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ST93CS56
ST93CS57
2K (128 x 16) SERIAL MICROWIRE EEPROM
NOT FOR NEW DESIGN
1 MILLION ERASE/WRITE CYCLES, with
40 YEARS DATA RETENTION
SELF-TIMED PROGRAMMING CYCLE with
AUTO-ERASE
READY/BUSY SIGNAL DURING
PROGRAMMING
SINGLE SUPPLY VOLTAGE
– 3V to 5.5V for the ST93CS56
– 2.5V to 5.5V for the ST93CS57
USER DEFINED WRITE PROTECTED AREA
PAGE WRITE MODE (4 WORDS)
SEQUENTIAL READ OPERATION
5ms TYPICAL PROGRAMMING TIME
ST93CS56 and ST93CS57 are replaced by
the M93S56
8
1
PSDIP8 (B)
0.4mm Frame
8
1
SO8 (M)
150mil Width
Figure 1. Logic Diagram
DESCRIPTION
The ST93CS56 and ST93CS57 are 2K bit Electri-
cally Erasable Programmable Memory (EEPROM)
fabricated with SGS-THOMSON’s High Endurance
Single Polysilicon CMOS technology. The memory
is accessed through a serial input D and output Q.
The 2K bit memory is organized as 128 x 16 bit
words.The memory is accessed by a set of instruc-
tions which include Read, Write, Page Write, Write
All and instructions used to set the memory protec-
tion. A Read instruction loads the address of the
first word to be read into an internal address
pointer.
Table 1. Signal Names
S Chip Select Input
D Serial Data Input
Q Serial Data Output
C Serial Clock
PRE
W
Protect Enable
Write Enable
VCC Supply Voltage
VSS Ground
D
C
S
PRE
W
VCC
ST93CS56
ST93CS57
VSS
Q
AI00896B
June 1997
This is information on a product still in production bu t not recommended for new de signs.
1/16
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Figure 5. Synchronous Timing, Read or Write
C
S
tDVCH
tCHDX
D An
A0
Hi-Z
Q
tCHQL
ADDRESS INPUT
ST93CS56, ST93CS57
tCHQV
Q15/Q7
tCLSL
tSLSH
tSLQZ
Q0
DATA OUTPUT
AI00820C
PRE
W
C
S
D
Q
tDVCH
An
Hi-Z
tCHDX
A0/D0
ADDRESS/DATA INPUT
tCLPRX
tSLWX
tCLSL
tSLSH
tSHQV
BUSY
tW
READY
WRITE CYCLE
tSLQZ
AI00888B
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Figure 8. PRREAD, PRWRITE, PREN Sequences
ST93CS56, ST93CS57
Protect
Register
READ
Protect
Register
WRITE
Protect
Register
ENABLE
PRE
S
D
Q
PRE
W
S
D
Q
PRE
W
S
D
1 1 0 Xn X0
An A0 F
ADDR
OP
CODE
DATA
OUT
F = Protect Flag
1 0 1 An A0
CHECK
STATUS
ADDR
OP
CODE
BUSY
READY
1 0 0 1 1 Xn X0
OP
CODE
AI00891D
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ST93CS56.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
| ST93CS56 | (ST93CS56 / ST93CS57) 2K 128 x 16 SERIAL MICROWIRE EEPROM | STMicroelectronics |
| ST93CS57 | (ST93CS56 / ST93CS57) 2K 128 x 16 SERIAL MICROWIRE EEPROM | STMicroelectronics |
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