參數(shù)資料
型號(hào): FM25C160
廠商: Fairchild Semiconductor Corporation
英文描述: 16K-Bit SPI⑩ Interface Serial CMOS EEPROM
中文描述: 16K的位SPI⑩的CMOS EEPROM的串行接口
文件頁(yè)數(shù): 1/11頁(yè)
文件大?。?/td> 102K
代理商: FM25C160
1
www.fairchildsemi.com
FM25C160U Rev. B
F
FM25C160U
16K-Bit SPI Interface
Serial CMOS EEPROM
Block Diagram
February 2002
2002 Fairchild Semiconductor Corporation
Instruction
Decoder
Control Logic
and Clock
Generators
High Voltage
Generator
and
Program
Timer
Instruction
Register
Program
Enable
Data In/Out Register
8 Bits
Data Out
Buffer
Non-Volatile
Status Register
Decoder
Address
Counter/
Register
EEPROM Array
Read/Write Amps
/CS
/HOLD
SCK
V
CC
V
SS
V
PP
/WP
SI
SO
General Description
The FM25C160U is a 16K bit serial interface CMOS EEPROM
(Electrically Erasable Programmable Read-Only Memory). This
device fully conforms to the SPI 4-wire protocol which uses Chip
Select (/CS), Clock (SCK), Data-in (SI) and Data-out (SO) pins to
synchronously control data transfer between the SPI microcontroller
and the EEPROM. In addition, the serial interface allows a minimal
pin count, packaging designed to simplify PC board layout re-
quirements and offers the designer a variety of low voltage and low
power options.
This SPI EEPROM family is designed to work with the 68HC11 or
any other SPI-compatible, high-speed microcontroller and offers
both hardware (/WP pin) and software ("block write") data protec-
tion. For example, entering a 2-bit code into the STATUS REGIS-
TER prevents programming in a selected block of memory and all
programming can be inhibited by connecting the /WP pin to V
SS
;
allowing the user to protect the entire array or a selected section.
In addition, SPI devices feature a /HOLD pin, which allows a
temporary interruption of the datastream into the EEPROM.
Fairchild EEPROMs are designed and tested for applications
requiring high endurance, high reliability, and low power con-
sumption for a continuously reliable non-volatile solution for all
markets.
Functions
I
SPI MODE 0 interface
I
16K bits organized as 2048 x 8
I
Extended 2.7V to 5.5V operating voltage
I
2.1 MHz operation @ 4.5V - 5.5V
I
Self-timed programming cycle
I
"Programming complete" indicated by STATUS REGISTER
polling
I
/WP pin and BLOCK WRITE protection
Features
I
Sequential read of entire array
I
16 byte "Page write" mode to minimize total write time per
byte
I
/WP pin and BLOCK WRITE protection to prevent inadvert-
ent programming as well as programming ENABLE and
DISABLE opcodes.
I
/HOLD pin to suspend data transfer
I
Typical 1
μ
A standby current (I
SB
) for "L" devices and 0.1
μ
A
standby current for "LZ" devices.
I
Endurance: Up to 1,000,000 data changes
I
Data retention greater than 40 years
SPI is a trademark of Motorola Corporation
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