24AA32A
器件资料摘要：
2003 Microchip Technology Inc. DS21713D-page 1
24AA32A/24LC32A
Device Selection Table
Features
• Single supply with operation down to 1.8V
Low-power CMOS technology
- 1 mA active current typical
-1µA standby current (max.) (I-temp)
Organized as 4 blocks of 8K bits (32K bit)
2-wire serial interface bus, I
2
C™ compatible
Cascadable for up to eight devices
Schmitt Trigger inputs for noise suppression
Output slope control to eliminate ground bounce
100 kHz (<2.5V) and 400 kHz (≥2.5V)
compatibility
Self-timed write cycle (including auto-erase)
Page write buffer for up to 32 bytes
2 ms typical write cycle time for page write
Hardware write-protect for entire memory
Can be operated as a serial ROM
Factory programming (QTP) available
ESD protection > 4,000V
1,000,000 erase/write cycles
Data retention > 200 years
8-lead PDIP, SOIC, TSSOP and MSOP packages
Standard and Pb-free finishes available
Available temperature ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
Description
The Microchip Technology Inc. 24AA32A/24LC32A
(24XX32A*) is a 32 Kbit Electrically Erasable PROM.
The device is organized as four blocks of 8K x 8-bit
memory with a 2-wire serial interface. Low-voltage
design permits operation down to 1.8V, with standby
and active currents of only 1 µA and 1 mA,
respectively. It has been developed for advanced, low-
power applications such as personal communications
or data acquisition. The 24XX32A also has a page write
capability for up to 32 bytes of data. Functional address
lines allow up to eight devices on the same bus, for up
to 256 Kbits address space. The 24XX32A is available
in the standard 8-pin PDIP, surface mount SOIC,
TSSOP and MSOP packages.
Package Types
Block Diagram
Part
Number
VCC
Range
Max Clock
Frequency
Temp
Ranges
24AA32A 1.8-5.5 400 kHz
(1)
I
24LC32A 2.5-5.5 400 kHz I, E
Note 1: 100 kHz for VCC <2.5V
24
X
X
32
A0
A1
A2
Vss
1
2
3
4
8
7
6
5
Vcc
WP
SCL
SDA
PDIP/SOIC/TSSOP/MSOP
2
4
XX3
2X
WP
Vcc
A0
A1
SCL
SDA
Vss
A2
1
2
3
4
8
7
6
5
ROTATED TSSOP
(24AA32AX/24LC32AX)
HV Generator
EEPROM
Array
Page Latches
YDEC
XDEC
Sense Amp.
R/W Control
I/O
Control
Logic
I/O
Memory
Control
Logic
A0 A1 WPA2
SCL
SDA
Vcc
VSS
32K I
2
C
™
Serial EEPROM
*24XX32A is used in this document as a generic part number for the 24AA32A/24LC32A devices.
24AA32A/24LC32A
Device Selection Table
Features
• Single supply with operation down to 1.8V
Low-power CMOS technology
- 1 mA active current typical
-1µA standby current (max.) (I-temp)
Organized as 4 blocks of 8K bits (32K bit)
2-wire serial interface bus, I
2
C™ compatible
Cascadable for up to eight devices
Schmitt Trigger inputs for noise suppression
Output slope control to eliminate ground bounce
100 kHz (<2.5V) and 400 kHz (≥2.5V)
compatibility
Self-timed write cycle (including auto-erase)
Page write buffer for up to 32 bytes
2 ms typical write cycle time for page write
Hardware write-protect for entire memory
Can be operated as a serial ROM
Factory programming (QTP) available
ESD protection > 4,000V
1,000,000 erase/write cycles
Data retention > 200 years
8-lead PDIP, SOIC, TSSOP and MSOP packages
Standard and Pb-free finishes available
Available temperature ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
Description
The Microchip Technology Inc. 24AA32A/24LC32A
(24XX32A*) is a 32 Kbit Electrically Erasable PROM.
The device is organized as four blocks of 8K x 8-bit
memory with a 2-wire serial interface. Low-voltage
design permits operation down to 1.8V, with standby
and active currents of only 1 µA and 1 mA,
respectively. It has been developed for advanced, low-
power applications such as personal communications
or data acquisition. The 24XX32A also has a page write
capability for up to 32 bytes of data. Functional address
lines allow up to eight devices on the same bus, for up
to 256 Kbits address space. The 24XX32A is available
in the standard 8-pin PDIP, surface mount SOIC,
TSSOP and MSOP packages.
Package Types
Block Diagram
Part
Number
VCC
Range
Max Clock
Frequency
Temp
Ranges
24AA32A 1.8-5.5 400 kHz
(1)
I
24LC32A 2.5-5.5 400 kHz I, E
Note 1: 100 kHz for VCC <2.5V
24
X
X
32
A0
A1
A2
Vss
1
2
3
4
8
7
6
5
Vcc
WP
SCL
SDA
PDIP/SOIC/TSSOP/MSOP
2
4
XX3
2X
WP
Vcc
A0
A1
SCL
SDA
Vss
A2
1
2
3
4
8
7
6
5
ROTATED TSSOP
(24AA32AX/24LC32AX)
HV Generator
EEPROM
Array
Page Latches
YDEC
XDEC
Sense Amp.
R/W Control
I/O
Control
Logic
I/O
Memory
Control
Logic
A0 A1 WPA2
SCL
SDA
Vcc
VSS
32K I
2
C
™
Serial EEPROM
*24XX32A is used in this document as a generic part number for the 24AA32A/24LC32A devices.