X9525V20IZ datasheet(11/24 Pages) INTERSIL

Part #	X9525V20IZ

Description	Dual DCP, EEPROM Memory

Download	24 Pages

Scroll/Zoom	100%

Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

Logo

11 / 24 page

11

FN8210.1

January 3, 2006

Random EEPROM Read

Random read operation allows the master to access any

memory location in the array. Prior to issuing the Slave

Address Byte with the R/W bit set to one, the master

must first perform a “dummy” write operation. The master

issues the START condition and the Slave Address Byte,

receives an ACKNOWLEDGE, then issues an Address

Byte. This “dummy” Write operation sets the address

pointer to the address from which to begin the random

EEPROM read operation.

After the X9525 acknowledges the receipt of the Address

Byte, the master immediately issues another START

condition and the Slave Address Byte with the R/W bit

set to one. This is followed by an ACKNOWLEDGE from

the X9525 and then by the eight bit word. The master ter-

minates the read operation by not responding with an

ACKNOWLEDGE and instead issuing a STOP condition

(Refer to Figure 15.).

A similar operation called “Set Current Address” also

exists. This operation is performed if a STOP is issued

instead of the second START shown in Figure 15. In this

case, the device sets the address pointer to that of the

Address Byte, and then goes into standby mode after the

STOP bit. All bus activity will be ignored until another

START is detected.

Sequential EEPROM Read

Sequential reads can be initiated as either a current

address read or random address read. The first Data

Byte is transmitted as with the other modes; however,

the master now responds with an ACKNOWLEDGE,

indicating it requires additional data. The X9525 contin-

ues to output a Data Byte for each ACKNOWLEDGE

received. The master terminates the read operation by

not responding with an ACKNOWLEDGE and instead

issuing a STOP condition.

The data output is sequential, with the data from

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

address counter for read operations increments through

the entire memory contents to be serially read during

one operation. At the end of the address space the

counter “rolls over” to address 00h and the device con-

tinues to output data for each ACKNOWLEDGE

received (Refer to Figure 16.).

0

Slave

Address

Byte

A

C

K

A

C

K

S

t

a

r

t

S

t

o

p

Slave

Address

Data

A

C

K

1

S

t

a

r

t

SDA Bus

Signals from

the Slave

Signals from

the Master

Figure 15. Random EEPROM Address Read Sequence

0 1 0 0 0 0

1

1 0 1 0 0 0 0

READ Operation

WRITE Operation

“Dummy” Write

A

0

A

0

Data

(2)

S

t

o

p

Slave

Address

Data

(n)

A

C

K

A

C

K

SDA Bus

Signals from

the Slave

Signals from

the Master

1

Data

(n-1)

A

C

K

A

C

K

(n is any integer greater than 1)

Data

(1)

Figure 16. Sequential EEPROM Read Sequence

0

0 0

A

0

X9525

Similar Part No. - X9525V20IZ

Manufacturer	Part #	Datasheet	Description
Renesas Technology Corp	X9525V20IZ	1,013Kb / 26P	Fiber Channel/Gigabit Ethernet Laser Diode Control for Fiber Optic Modules Dual DCP, EEPROM Memory

More results

Similar Description - X9525V20IZ

Manufacturer	Part #	Datasheet	Description
Xicor Inc.	X9521	434Kb / 26P	Dual DCP, EEPROM Memory
Intersil Corporation	X9521	360Kb / 24P	Dual DCP, EEPROM Memory
	X9520	561Kb / 33P	Triple DCP, POR,2kbit EEPROM Memory, Dual Voltage Monitors
	X9520	576Kb / 30P	Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors
	X9520	465Kb / 29P	Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors
	X40231	541Kb / 36P	Triple Voltage Monitors, POR, 2 kbit EEPROM MEMORY, and Single/Dual DCP
Renesas Technology Corp	X9525	1,013Kb / 26P	Fiber Channel/Gigabit Ethernet Laser Diode Control for Fiber Optic Modules Dual DCP, EEPROM Memory
	X9521	935Kb / 24P	Dual DCP, EEPROM Memory Fiber Channel/Gigabit Ethernet Laser Diode Control for Fiber Optic Modules
	X40231	1Mb / 36P	Integrated System Management IC Triple Voltage Monitors, POR, 2 kbit EEPROM Memory, and Single/Dual DCP April 11, 2005
Maxim Integrated Produc...	MAX20047	898Kb / 29P	Dual 3A USB DCP Charger 2017

More results

X9525V20IZ Datasheet(PDF) 11 Page - Intersil Corporation

X9525V20IZ Datasheet(HTML) 11 Page - Intersil Corporation

Similar Part No. - X9525V20IZ

Similar Description - X9525V20IZ

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL