Harman Kardon dmc230, Service Manual, Page: 40 / 110

1
Features
•
Medium-voltage and Standard-voltage Operation
– 5.0 (V
CC
= 4.5V to 5.5V)
– 2.7 (V
CC
= 2.7V to 5.5V)
•
Automotive Temperature Range –40
°
C to 125
°
C
•
Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K),
1024 x 8 (8K) or 2048 x 8 (16K)
•
Two-wire Serial Interface
•
Schmitt Trigger, Filtered Inputs for Noise Suppression
•
Bidirectional Data Transfer Protocol
•
400 kHz (2.7V) Compatibility
•
Write Protect Pin for Hardware Data Protection
•
8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes
•
Partial Page Writes are Allowed
•
Self-timed Write Cycle (5 ms max)
•
High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
•
8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP Packages
Description
The AT24C01A/02/04/08A/16A provides 1024/2048/4096/8192/16384 bits of serial
electrically erasable and programmable read-only memory (EEPROM) organized as
128/256/512/1024/2048 words of 8 bits each. The device is optimized for use in many
automotive applications where low-power and low-voltage operation are essential.
The AT24C01A/02/04/08A/16A is available in space-saving 8-lead PDIP, 8-lead
JEDEC SOIC, and 8-lead TSSOP packages and is accessed via a two-wire serial
interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V) versions.
Table 1. Pin Configurations
Pin Name Function
A0
−
A2 Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
NC No Connect
Two-wire
Automotive
Temperature
Serial EEPROM
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
8K (1024 x 8)
16K (2048 x 8)
AT24C01A
AT24C02
AT24C04
AT24C08A
AT24C16A
5092B–SEEPR–9/05
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
S CL
S DA
8 -le a d PDIP
8 -le a d S OIC
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
S CL
S DA
8 -le a d T SS OP
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
S CL
S DA
harman/kardon DMC250/230 Service Manual
Page 40 of 110