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PDF 93C56BESN Data sheet ( Hoja de datos )
| Número de pieza | 93C56BESN | |
| Descripción | 2K 5.0V Automotive Temperature Microwire Serial EEPROM | |
| Fabricantes | Microchip Technology | |
| Logotipo |  |
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M
93C56A/B
2K 5.0V Automotive Temperature Microwire® Serial EEPROM
FEATURES
• Single supply 5.0V operation
• Low power CMOS technology
- 1 mA active current (typical)
- 1 µA standby current (maximum)
• 256 x 8 bit organization (93C56A)
• 128 x 16 bit organization (93C56B)
• Self-timed ERASE and WRITE cycles (including
auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial interface
• Device status signal during ERASE/WRITE
cycles
• Sequential READ function
• 100,000 E/W cycles guaranteed
• Data retention > 200 years
• 8-pin PDIP and SOIC packages
• Available for the following temperature ranges:
- Automotive (E):
-40°C to +125°C
DESCRIPTION
The Microchip Technology Inc. 93C56A/B is a 2K-bit,
low-voltage serial Electrically Erasable PROM. The
device memory is configured as 256 x 8 bits (93C56A)
or 128 x 16 bits (93C56B). Advanced CMOS technol-
ogy makes this device ideal for low-power, nonvolatile
memory applications. The 93C56A/B is available in
standard 8-pin DIP and surface mount SOIC packages.
This device is only recommeded for 5V automotive
temperature applications. For all commercial and
industrial applications, the 93LC56A/B is recom-
mended.
PACKAGE TYPE
PDIP
CS
VCC
1
CLK 2
DI 3
DO 4
8
7 NC
6 NC
5 VSS
SOIC
CS
CLK
DI
DO
1
2
3
4
8 VCC
7 NC
6 NC
5 VSS
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
ADDRESS
COUNTER
DI
CS
CLK
DATA
REGISTER
MEMORY
DECODE
LOGIC
CLOCK
GENERATOR
OUTPUT
BUFFER
DO
VCC
VSS
Microwire is a registered trademark of National Semiconductor.
© 1998 Microchip Technology Inc.
Preliminary
DS21206B-page 1
1 page  
3.4 ERASE
The ERASE instruction forces all data bits of the spec-
ified address to the logical “1” state. This cycle begins
on the rising clock edge of the last address bit.
The DO pin indicates the READY/BUSY status of the
device if CS is brought high after a minimum of 250 ns
low (TCSL). DO at logical “0” indicates that program-
ming is still in progress. DO at logical “1” indicates that
the register at the specified address has been erased
and the device is ready for another instruction.
FIGURE 3-2: ERASE TIMING
CS
CLK
93C56A/B
3.5 Erase All (ERAL)
The ERAL instruction will erase the entire memory
array to the logical “1” state. The ERAL cycle is identical
to the ERASE cycle, except for the different opcode.
The ERAL cycle is completely self-timed and com-
mences at the rising clock edge of the last address bit.
Clocking of the CLK pin is not necessary after the
device has entered the ERAL cycle.
The DO pin indicates the READY/BUSY status of the
device, if CS is brought high after a minimum of 250 ns
low (TCSL) and before the entire ERAL cycle is com-
plete.
TCSL
CHECK STATUS
DI
1
1
1
AN AN-1 AN-2 •••
A0
HIGH-Z
DO
TSV
BUSY
TWC
TCZ
READY
HIGH-Z
FIGURE 3-3: ERAL TIMING
CS
TCSL
CHECK STATUS
CLK
DI
1
00
10
X •••
X
HIGH-Z
DO
TSV
BUSY
TEC
TCZ
READY
HIGH-Z
© 1998 Microchip Technology Inc.
Preliminary
DS21206B-page 5
5 Page 
93C56A/B
93C56A/B PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
93C56A/B
/P
Package:
P = Plastic DIP (300 mil Body), 8-lead
SN = Plastic SOIC (150 mil Body), 8-lead
Temperature
Range:
E = -40°C to +125°C
Device:
93C56A
93C56AT
93C56B
93C56BT
2K Microwire Serial EEPROM (x8)
2K Microwire Serial EEPROM (x8) Tape and Reel
2K Microwire Serial EEPROM (x16)
2K Microwire Serial EEPROM (x16) Tape and Reel
Sales and Support
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom-
mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office.
2. The Microchip Corporate Literature Center U.S. FAX: (602) 786-7277.
3. The Microchip’s Bulletin Board, via your local CompuServe number (CompuServe membership NOT required).
© 1998 Microchip Technology Inc.
Preliminary
DS21206B-page 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 93C56BESN.PDF ] | |
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