參數(shù)資料
型號(hào)： X4165V8I-4.5A
廠商： INTERSIL CORP
元件分類： 電源管理
英文描述： CPU Supervisor with 16K EEPROM
中文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8
封裝： PLASTIC, MO-153AC, TSSOP-8
文件頁(yè)數(shù)： 1/23頁(yè)
文件大小： 118K
代理商： X4165V8I-4.5A
9900-3003.5 5/30/00 EP
Xicor, Inc. 2000 Patents Pending
Characteristics subject to change without notice.
1 of 23
64K
X46402
BLOCK DIAGRAM
Command
Decode
and
Control
Logic
HV Generation
Timing and Control
X
Y Decoder
Data Register
Write Control
Password Logic
WP
SCL
SDA
V
CC
V2FAIL
(V
CC
) Control Signal
V2MON
RESET
E
A
Write Password Area
(Bytes)
(64, 128, 256, 512,
2K, 4K, All, None)
Power on and
Low Voltage
Generation
V
2TRIP
+
-
Reset
V
TRIP
+
-
Reset &
Watchdog
Timebase
Control
OTP array 1
OTP array 2
Watchdog
Timer Reset
Passwords
No Password Area
Dual Voltage CPU Supervisor with 64K Password Protected EEPROM
FEATURES
Dual Voltage Detection and Reset Assertion
—Low V
CC
monitor
—Low V2MON monitor
—Low V
CC
block of EEPROM writes
—RESET signal valid down to V
Selectable Watchdog Timer
—150ms, 450ms, 1s, 5s, 10s, 20s, 1min, OFF
Volatile Flag Shows Watchdog/Low Voltage Reset
64kbit 2-Wire Serial EEPROM
—1MHz serial interface speed
—64-byte page write mode
Two 64-Byte OTP Memory Blocks
—Requires 64-bit OTP password to write
Adjustable Size Password Protected Array
—64 bit read and write array passwords
—Non-password protected array area
8 Count Tamper Counter for Invalid Passwords
Operates at 2.5-3.7V
8L TSSOP package
CC
=1V
DESCRIPTION
The X46402 combines several functions into one
device. The first is a dual voltage CPU supervisor plus
64Kbit serial EEPROM memory with password pro-
tected write and read operations. The size of the pass-
word protected area is selectable by 3 control bits. A
Write Protect (WP) pin in conjunction with a WPEN bit
provides hardware OTP control of the configuration of
the array. Password protected areas require 64 bit
read or write passwords prior to access.
A secondary voltage monitor circuit activates a V2FAIL
pin when the secondary supply voltage drops below a
V2trip voltage. This circuit is primarily intended to
detect the immediate loss of the battery supply.
A low V
when V
also blocks read or write operations.
CC
CC
voltage detect circuit activates a RESET pin
drops below a V
TRIP
voltage. This signal
A watchdog timer with the time period controlled by
three bits provides several possible time out periods
from 150ms to 1 minute.
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