IS34C02B datasheet(8/18 Pages) ISSI

Part #	IS34C02B

Description	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent and Reversible Write-Protection

Download	18 Pages

Scroll/Zoom	100%

Manufacturer	ISSI [Integrated Silicon Solution, Inc]

Direct Link	http://www.issi.com

Logo

8 / 18 page

8

Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774

ADVANCED INFORMATION

Rev. 00D

03/21/06

IS34C02B

ISSI®

Sequential Read

Sequential Reads can be initiated as either a Current

Address Read or Random Address Read. After the

IS34C02B sends the initial byte sequence, the Master

device responds with an ACK indicating it requires additional

data from the IS34C02B. The IS34C02B continues to output

data for each ACK received. The Master device terminates

the sequential Read operation by pulling SDA High (no ACK)

indicating the last data byte to be read, followed by a Stop

condition.

The data output is sequential, with the data from address n

followed by the data from address n+1, ... etc. The address

counter increments by one automatically, allowing the

entire memory contents to be serially read during sequential

Read operations. When the memory address boundary 255

is reached, the address counter “rolls over” to address 0, and

the IS34C02B continues to output data for each ACK

received. (Refer to Figure 10. Sequential Read Operation

Starting with a Random Address Read Diagram.)

READ OPERATION

Read operations are initiated in the same manner as Write

operations, except that the (R/

W) bit of the Slave address is

set to “1”. There are three Read operation options: current

address read, random address read and sequential read.

Current Address Read

The IS34C02B contains an internal address counter

which maintains the address of the last byte accessed,

incremented by one. For example, if the previous

operation is either a Read or Write operation addressed

to the address location n, the internal address counter

would increment to address location n+1. When the

IS34C02B receives the Device Addressing Byte with a

Read operation (R/

W bit set to “1”), it will respond an ACK

and transmit the 8-bit data byte stored at address

location n+1. The Master should not acknowledge the

transfer but should generate a Stop condition so the

IS34C02B discontinues transmission. If the last byte of

the memory was the previous access, the data from

location '0' will be transmitted. (Refer to Figure 8.

Current Address Read Diagram.)

Random Address Read

Selective Read operations allow the Master device to select

at random any memory location for a Read operation. The

Master device first performs a 'dummy' Write operation by

sending the Start condition, Slave address and word address

of the location it wishes to read. After the IS34C02B

acknowledges the word address, the Master device resends

the Start condition and the Slave address, this time with the

R/

W bit set to one. The IS34C02B then responds with its

ACK and sends the data requested. The Master device

does not send an ACK but will generate a Stop

condition. (Refer to Figure 9. Random Address Read

Diagram.)

Similar Part No. - IS34C02B

Manufacturer	Part #	Datasheet	Description
Integrated Silicon Solu...	IS34C02	72Kb / 15P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
	IS34C02-2GI	72Kb / 15P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
	IS34C02-2GLI	72Kb / 15P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
	IS34C02-2SI	72Kb / 15P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
	IS34C02-2SLI	72Kb / 15P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection

More results

Similar Description - IS34C02B

Manufacturer	Part #	Datasheet	Description
Integrated Silicon Solu...	IS24C52	68Kb / 14P	2k-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
	IS34C02	72Kb / 15P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
	IS34C02_0511	137Kb / 18P	2K-bit 2-WIRE SERIAL CMOS EEPROM with Permanent Write-Protection
ATMEL Corporation	AT34C02B	466Kb / 21P	Two-wire Serial EEPROM with Permanent and Reversible Software Write Protect
	AT34C02C	370Kb / 20P	Two-wire Serial EEPROM with Permanent and Reversible Software Write Protect
	AT34C02C	658Kb / 25P	Two-wire Serial EEPROM with Permanent and Reversible Software Write Protect 2K (256 x 8)
	AT34C02C	412Kb / 18P	Two-wire Automotive Temperature Serial EEPROM with Permanent and Reversible Software Write Protect
	AT34C02	184Kb / 12P	2-Wire Serial EEPROM with Permanent Software Write Protect
	AT34C02D	756Kb / 25P	Permanent and Reversible Software Write Protection
Integrated Silicon Solu...	IS24C02D	487Kb / 18P	2K-bit 2-WIRE AUTOMOTIVE SERIAL CMOS EEPROM

More results

IS34C02B Datasheet(PDF) 8 Page - Integrated Silicon Solution, Inc

IS34C02B Datasheet(HTML) 8 Page - Integrated Silicon Solution, Inc

Similar Part No. - IS34C02B

Similar Description - IS34C02B

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Datasheet Download

Link URL