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Número de pieza | 93LCS56-ISN | |
Descripción | 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect | |
Fabricantes | Microchip Technology | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de 93LCS56-ISN (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
No Preview Available ! 93LC66A/B
4K 2.5V Microwire® Serial EEPROM
FEATURES
• Single supply with operation down to 2.5V
• Low power CMOS technology
- 1 mA active current (typical)
- 1 µA standby current (maximum)
• 512 x 8 bit organization (93LC66A)
• 256 x 16 bit organization (93LC66B)
• 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
• 1,000,000 E/W cycles guaranteed
• Data retention > 200 years
• 8-pin PDIP/SOIC and 8-pin TSSOP packages
• Available for the following temperature ranges:
- Commercial (C):
- Industrial (I):
0°C to +70°C
-40°C to +85°C
PACKAGE TYPE
DIP
SOIC
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
DI
CS
CLK
DATA
REGISTER
ADDRESS
COUNTER
OUTPUT
BUFFER
DO
MODE
DECODE
LOGIC
CLOCK
GENERATOR
Vcc
Vss
DESCRIPTION
The Microchip Technology Inc. 93LC66A/B are 4K-bit,
low voltage serial Electrically Erasable PROMs. The
device memory is configured as x8 (93LC66A) or
x16 bits (93LC66B). Advanced CMOS technology
makes these devices ideal for low power nonvolatile
memory applications. The 93LC66A/B is available in
standard 8-pin DIP, surface mount SOIC, and TSSOP
packages. The 93LC66AX/BX are only offered in a
150-mil SOIC package.
SOIC
TSSOP
CS 1
CLK 2
DI 3
DO 4
8 Vcc
CS
7 NC
CLK
6 NC
DI
5 Vss
DO
1
2
3
4
8 VCC
NC 1
7 NC
Vcc 2
6 NC
CS 3
5 Vss CLK 4
CS 1
8 NC CLK 2
DI 3
7 Vss
DO 4
6 DO
5 DI
8 Vcc
7 NC
6 NC
5 Vss
Microwire is a registered trademark of Motorola.
1998 Microchip Technology Inc.
DS21209C-page 1
1 page 3.4 ERASE
The ERASE instruction forces all data bits of the spec-
ified address to the logical “1” state. CS is brought low
following the loading of the last address bit. This falling
edge of the CS pin initiates the self-timed programming
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). 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
93LC66A/B
3.5 Erase All (ERAL)
The Erase All (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
commences at the falling edge of the CS. 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
FIGURE 3-3: ERAL TIMING
CS
CLK
TCSL
TSV
BUSY
TWC
TCZ
READY
HIGH-Z
CHECK STATUS
DI
1
00
10
X •••
X
HIGH-Z
DO
Guaranteed at Vcc = 4.5V to +6.0V.
TSV
BUSY
TEC
TCZ
READY
HIGH-Z
1998 Microchip Technology Inc.
DS21209C-page 5
5 Page 93LC66A/B
93LC66A/B PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
93LC66A/B —
/P
Package:
P = Plastic DIP (300 mil Body), 8-lead
SN = Plastic SOIC (150 mil Body), 8-lead
SM = Plastic SOIC (208 mil Body), 8-lead
ST = TSSOP, 8-lead
Temperature
Range:
Blank = 0°C to +70°C
I = -40°C to +85°C
Device:
93LC66A
93LC66AT
93LC66AX
93LC66AXT
93LC66B
93LC66BT
93LC66BX
93LC66BXT
4K Microwire Serial EEPROM (x8)
4K Microwire Serial EEPROM (x8) Tape and Reel
4K Microwire Serial EEPROM (x8) in alternate
pinout (SN only)
4K Microwire Serial EEPROM (x8) in alternate
pinout, Tape and Reel (SN only)
4K Microwire Serial EEPROM (x16)
4K Microwire Serial EEPROM (x16) Tape and Reel
4K Microwire Serial EEPROM (x16) in alternate
pinout (SN only)
4K Microwire Serial EEPROM (x16) in alternate
pinout, Tape and Reel (SN only)
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: (480) 792-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
1998 Microchip Technology Inc.
DS21209C-page 11
11 Page |
Páginas | Total 12 Páginas | |
PDF Descargar | [ Datasheet 93LCS56-ISN.PDF ] |
Número de pieza | Descripción | Fabricantes |
93LCS56-ISL | 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect | Microchip Technology |
93LCS56-ISM | 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect | Microchip Technology |
93LCS56-ISN | 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect | Microchip Technology |
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