24LC04B/08B
M
4K/8K 2.5 I2C™ Serial EEPROMs
FEATURES
PACKAGE TYPES
• Single supply with operation down to 2.5V
• Low power CMOS technology
PDIP, SOIC
A0
A1
A2
1
2
3
8
7
6
VCC
WP
- 1 mA active current typical
- 10 µA standby current typical at 5.5V
- 5 µA standby current typical at 3.0V
• Organized as two or four blocks of 256 bytes
(2 x 256 x 8) and (4 x 256 x 8)
SCL
SDA
Vss
4
5
• 2-wire serial interface bus, I2C™ compatible
• Schmitt trigger, filtered inputs for noise
suppression
TSSOP
MSOP
1
2
3
4
8
7
6
5
A0
A1
VCC
• Output slope control to eliminate ground bounce
WP
• 100 kHz (E-temp) and 400 kHz (C/I-temp.)
compatibility
A2
SCL
SDA
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 16 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
VSS
1
2
3
4
8
A0
A1
A2
VCC
7
6
5
WP
SCL
SDA
VSS
• 1,000,000 erase/write cycles ensured
• Data retention > 200 years
Note: A0, A1 and A2 are not used
• 8-pin DIP, 8-lead SOIC, 8-pin TSSOP packages
• Available temperature ranges:
- Commercial (C):
- Industrial (I):
- Automotive (E):
0°C to
-40°C to
-40°C to +125°C
+70°C
+85°C
BLOCK DIAGRAM
WP
DESCRIPTION
HV GENERATOR
The Microchip Technology Inc. 24LC04B/08B is a 4
Kbit or 8 Kbit Electrically Erasable PROM (EEPROM).
The device is organized as two or four blocks of 256 x
8-bit memory with a 2-wire serial interface. Low voltage
design permits operation down to 2.5 volts with typical
standby and active currents of only 5 µA and 1 mA
respectively. The 24LC04B/08B also has a page-write
capability for up to 16 bytes of data. The 24LC04B/08B
is available in the standard 8-pin DIP, 8-lead surface
mount SOIC, MSOP and TSSOP packages.
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
EEPROM ARRAY
(2 x 256 x 8) or
(4 x 256 x 8)
XDEC
PAGE LATCHES
SDA
SCL
YDEC
VCC
VSS
SENSE AMP
R/W CONTROL
2001 Microchip Technology Inc.
DS21051H-page 1