參數(shù)資料
型號: NM25C160LZN
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: PROM
英文描述: SPI Serial EEPROM
中文描述: 2K X 8 SPI BUS SERIAL EEPROM, PDIP8
封裝: 0.300 INCH, PLASTIC, DIP-8
文件頁數(shù): 1/10頁
文件大?。?/td> 100K
代理商: NM25C160LZN
1
www.fairchildsemi.com
NM25C160 Rev. D.1
N
(
March 1999
1999 Fairchild Semiconductor Corporation
NM25C160
16K-Bit Serial CMOS EEPROM
(Serial Peripheral Interface (SPI) Synchronous Bus)
General Description
The NM25C160 is a 16,384-bit CMOS EEPROM with an SPI
compatible serial interface. The NM25C160 is designed for data
storage in applications requiring both non-volatile memory and in-
system data updates. This EEPROM is well suited for applications
using the 68HC11 series of microcontrollers that support the SPI
interface for high speed communication with peripheral devices
via a serial bus to reduce pin count. The NM25C160 is imple-
mented in Fairchild Semiconductor’s floating gate CMOS process
that provides superior endurance and data retention.
The serial data transmission of this device requires four signal
lines to control the device operation: Chip Select (CS), Clock
(SCK), Data In (SI), and Serial Data Out (SO). All programming
cycles are completely self-timed and do not require an erase
before WRITE.
BLOCK WRITE protection is provided by programming the STA-
TUS REGISTER with one of four levels of write protection.
Additionally, separate WRITE enable and WRITE disable instruc-
tions are provided for data protection.
Hardware data protection is provided by the WP pin to protect
against inadvertent programming. The HOLD pin allows the serial
communication to be suspended without resetting the serial
sequence.
Block Diagram
Features
I
2.1 MHz clock rate @ 2.7V to 5.5V
I
16,384 bits organized as 2,048 x 8
I
Multiple chips on the same 3-wire bus with separate chip
select lines
I
Self-timed programming cycle
I
Simultaneous programming of 1 to 16 bytes at a time
I
Status register can be polled during programming to monitor
READY/BUSY
I
Write Protect (WP) pin and write disable instruction for both
hardware and software write protection
I
Block write protect feature to protect against accidental
writes
I
Endurance: 1,000,000 data changes
I
Data retention greater than 40 years
I
Packages available: 8-pin DIP, 8-pin SO, or 8-pin TSSOP
DS012402-1
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
1 of 2048
Address
Counter/
Register
EEPROM Array
16,384 Bits
(2048 x 8)
Read/Write Amps
CS
HOLD
SCK
V
CC
V
SS
V
PP
WP
SI
SO
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