AT24C08C serial EEPROM pinout

The AT24C08C stores 1024 bytes in four address blocks and supports a full-array hardware write protect input.

SOIC-8 8 contacts

PDIP-8 8 contacts

TSSOP-8 8 contacts

UDFN-8 · 2 × 3 mm 9 contacts

VFBGA-8 · 1.5 × 2.0 mm 8 contacts

SOT-23-5

5 contacts Current package

Microchip Technology ·

SOT-23-5 pinout

SOT-23-5

Top view. Start at the package pin-1 index and follow the numbered leads. Scroll the map to reach all contacts.

Selected pin details

3 · SDA

Bidirectional · Bidirectional

Open-drain I²C data. The bus needs a pull-up to its logic rail.

Microchip DS20006127A, §§ 1–2, 6–8, 12 and Product Identification System.

Electrical limits · Link to this pin

All 5 pins

Pin	Signal	Direction	Function
1	SCL Input	Input	I²C clock. Connect to the host clock line with its bus pull-up.
2	GND Supply return	Supply return	Connect to the common ground plane or bench return.
3	SDA Bidirectional	Bidirectional	Open-drain I²C data. The bus needs a pull-up to its logic rail.
4	VCC Supply input	Supply input	Primary device supply. Place the bypass capacitor close to this pin.
5	WP Input	Input	Tie high to protect the entire array from writes, or low to enable writes.

Signal assignments

I²C

The two high memory address bits are included in the device address. One word-address byte selects the offset within a block. With A2 low, the four blocks use 0x50–0x53.

Write protection

A logic high blocks writes across all four blocks while allowing reads.

WP (5)

Electrical limits

Parameter	Limit	Conditions and source
Supply1.7–5.5 V	1.7–5.5 V	See the datasheet timing table for the supported bus clock at the selected supply. Microchip DS20006127A, §§ 1–2, 6–8, 12 and Product Identification System.
Memory1024 bytes	1024 bytes	Four blocks of 256 bytes. Use the block bits in the device address. Microchip DS20006127A, §§ 1–2, 6–8, 12 and Product Identification System.
Page write16 bytes · 5 ms maximum	16 bytes · 5 ms maximum	Crossing the end of a page within one write wraps back inside that same page. Microchip DS20006127A, §§ 1–2, 6–8, 12 and Product Identification System.

Models and documents

The six maps follow the package configurations in the Microchip datasheet. Package rows include documented order-code examples. Pin 2 is NC on the 8 Kbit AT24C08C.

AT24C08C-STUM-T: Tape and reel.

AT24C08C manufacturer documentation· Microchip DS20006127A, §§ 1–2, 6–8, 12 and Product Identification System.