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PDF 93AA56 Data sheet ( Hoja de datos )

Número de pieza 93AA56
Descripción 1K/2K/4K 1.8V Microwire Serial EEPROM
Fabricantes Microchip Technology 
Logotipo Microchip Technology Logotipo



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93AA46/56/66
1K/2K/4K 1.8V Microwire® Serial EEPROM
FEATURES
• Single supply with programming operation down
to 1.8V
• Low power CMOS technology
- 70 µA typical active READ current at 1.8V
- 2 µA typical standby current at 1.8V
• ORG pin selectable memory configuration
- 128 x 8- or 64 x 16-bit organization (93AA46)
- 256 x 8- or 128 x 16-bit organization
(93AA56)
- 512 x 8 or 256 x 16 bit organization (93AA66)
• Self-timed ERASE and WRITE cycles
(including auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial I/O
• Device status signal during ERASE/WRITE cycles
• Sequential READ function
• 10,000,000 ERASE/WRITE cycles guaranteed on
93AA56 and 93AA66
• 1,000,000 E/W cycles guaranteed on 93AA46
• Data retention > 200 years
• 8-pin PDIP/SOIC
(SOIC in JEDEC and EIAJ standards)
• Temperature ranges supported
- Commercial (C):
0°C to +70°C
DESCRIPTION
The Microchip Technology Inc. 93AA46/56/66 are 1K,
2K and 4K low voltage serial Electrically Erasable
PROMs. The device memory is configured as x8 or x16
bits depending on the ORG pin setup. Advanced
CMOS technology makes these devices ideal for low
power non-volatile memory applications. The 93AA
Series is available in standard 8-pin DIP and surface
mount SOIC packages. The rotated pin-out 93AA46X/
56X/66X are offered in the “SN” package only.
PACKAGE TYPES
DIP
CS 1
CLK 2
DI 3
DO 4
SOIC
CS
CLK
DI
DO
SOIC
NU
Vcc
CS
CLK
1
2
3
4
1
2
3
4
8 VCC
7 NU
6 ORG
5 V SS
8 VCC
7 NU
6 ORG
5 V SS
8 ORG
7 Vss
6 DO
5 DI
BLOCK DIAGRAM
VCC
VSS
MEMORY
ARRAY
ADDRESS
DECODER
DI
ORG
CS
CLK
DATA REGISTER
MODE
DECODE
LOGIC
CLOCK
GENERATOR
ADDRESS
COUNTER
OUTPUT
BUFFER
Microwire is a registered trademark of National Semiconductor Incorporated.
DO
© 1996 Microchip Technology Inc.
DS20067G-page 1
This document was created with FrameMaker 4 0 4

1 page




93AA56 pdf
2.8 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 commences at
the falling edge of the CS. Clocking of the CLK pin is not
necessary after the device has entered the self clocking
mode. The ERAL instruction is guaranteed at 5V ±
10%.
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 write cycle is complete.
The ERAL cycle takes (8 ms typical).
FIGURE 2-1: SYNCHRONOUS DATA TIMING
V IH
CS
V IL
TCSS
V IH
CLK
V IL
V IH
DI
V IL
TDIS
DO VOH
(READ) VOL
DO VOH
(PROGRAM)
V OL
TSV
TCKH
TDIH
TPD
FIGURE 2-2: READ TIMING
CS
CLK
93AA46/56/66
2.9 Write All (WRAL)
The WRAL instruction will write the entire memory array
with the data specified in the command. The WRAL
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 self clocking
mode. The WRAL command does include an auto-
matic ERAL cycle for the device. Therefore, the WRAL
instruction does not require an ERAL instruction but the
chip must be in the EWEN status. The WRAL instruc-
tion is guaranteed at 5V ± 10%.
The DO pin indicates the READY/BUSY status of the
device if CS is brought high after a minimum of 250 ns
low (TCSL).
The WRAL cycle takes 16 ms typical.
TCKL
TCSH
TPD
STATUS VALID
TCZ
TCZ
TCSL
DI
11
0 • An • • • A0
DO TTRRII--SSTTAATTEE®
0 Dx • • • D0 Dx* • • • D0 Dx* • • • D0
Tri-State is a registered trademark of National Semiconductor Incorporated.
© 1996 Microchip Technology Inc.
DS20067G-page 5

5 Page





93AA56 arduino
93AA46/56/66
93AA46/56/66 Product Identification System
To order or to obtain information, e.g., on pricing or delivery, please use the listed part numbers, and refer to the factory or the listed
sales offices.
93AA46/56/66 -
/P
Package:
P = Plastic DIP (300 mil Body), 8-lead
SN = Plastic SOIC (150 mil Body), 8-lead
SM = Plastic SOIC (207 mil Body), 8-lead
(93AA46/56/66)
Temperature
Range:
Blank = 0°C to +70°C
Device:
93AA46/56/66
93AA46/56/66X
93AA46T/56T/66T
93AA46XT/56XT/66XT
Microwire Serial EEPROM
Microwire Serial EEPROM in alternate
pinouts (SN package only)
Microwire Serial EEPROM (Tape and Reel)
Microwire Serial EEPROM (Tape and Reel)
© 1996 Microchip Technology Inc.
DS20067G-page 11

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