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PDF ACE93C46 Data sheet ( Hoja de datos )
| Número de pieza | ACE93C46 | |
| Descripción | Three-wire Serial EEPROM | |
| Fabricantes | ACE Technology | |
| Logotipo |  |
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ACE93C46
Three-wire Serial EEPROM
Description
The ACE93C46 provides 1024 bits of serial electrically erasable programmable read only memory (EEPROM)
organized as 64 words of 16 bits each, when the ORG pin is connected to VCC and 128 words of 8 bits each when it is
tied to ground. The ACE93C46 is available in space-saving 8-lead PDIP, 8-lead TSSOP and 8-lead JEDEC SOIC
packages. The ACE93C46 is enabled through the Chip Select pin (CS), and accessed via a 3-wire serial interface
consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a Read instruction at DI, the
address is decoded and the data is clocked out serially on the data output pin DO. The WRITE cycle is completely
self-timed and no separate erase cycle is required before write. The Write cycle is only enabled when it is in the
Erase/Write Enable state. When CS is brought “high” following the initiation of a write cycle, the DO pin outputs the
Ready/Busy status.
Features
Low-voltage operation – 1.8 (VCC=1.8 to 5.5V)
Three-wire serial Interface
2MHz clock rate(5V) compatibility
Self-timed write cycle (5 ms max)
High-reliability – Endurance: 1 Million write cycles
Data retention: 100 Years
Packaging Type
DIP-8
SOP-8
TSSOP-8
Pin Configurations
Pin Name
CS
SK
DI
DO
GND
Vcc
ORG
DC
Function
Chip select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Internal Organization
Don’t Connect
VER 1.4 1
1 page  
ACE93C46
Three-wire Serial EEPROM
Symbol
tpd1
Parameter
Output Delay to “1”
Test Condition
Min Typ Max
4.5≦Vcc≦5.5v
250
AC Test 2.7≦Vcc≦5.5V
250
1.8V≦Vcc≦5.5V
1000
Units
ns
tpd0
Output Delay to “0”
AC Test
4.5≦Vcc≦5.5v
2.7≦Vcc≦5.5V
1.8V≦Vcc≦5.5V
250
250
1000
ns
4.5≦Vcc≦5.5v
tsv
CS to Status Valid
AC Test 2.7≦Vcc≦5.5V
1.8V≦Vcc≦5.5V
250
250
1000
ns
4.5≦Vcc≦5.5v
CS to DO in High
AC Test
tdf 2.7≦Vcc≦5.5V
Impedance
CS=VIL 1.8V≦Vcc≦5.5V
100
100 ns
400
twp Write Cycle Time
1.5 5
ms
Endurance(1)
5.0V, 25℃
Write
1M
Cycle
Note: 1. This parameter is characterized and is not 100% tested.
Functional Description
The ACE93C46 is accessed via a simple and versatile three-wire serial communication interface. Device operation is
controlled by seven instructions issued by the host processor. A valid instruction starts with a rising edge of CS and
consists of a start bit (logic“1”) followed by the appropriate op code and the desired memory address location.
Instruction Set for the ACE93C46
OP
Instruction SB Code
Address
*8 *16
Data
*8 *16
Comments
READ 1 10
A6-A0
A5-A0
EWEN 1 00 11XXXXX 11XXXX
Read data stored in memory, at
specified address
Write enable must precede all
programming modes
REASE 1 11
A6-A0
A5-A0
Erase memory location An-A0
WRITE 1 01
A6-A0
A5-A0 D7-D0 D15-D0 Writes memory location An-A0
ERAL 1 00 10XXXXX 10XXXX
Erases all memory locations. Valid
only at VCC=4.5V to 5.5V
Writes all memory locations. Valid
WRAL 1 00 01XXXXX 01XXXX D7-D0 D15-D0
only at VCC=4.5V to 5.5V
EWDS 1 00 00XXXXX 00XXXX
Disables all programming
instructions
Notes: The X’s in the address field represent don’t care values and must be clocked.
VER 1.4 5
5 Page 
Packaging information
SOP-8
ACE93C46
Three-wire Serial EEPROM
Note: Dimensions in Millimeters.
VER 1.4 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ACE93C46.PDF ] | |
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