参数资料
型号: X4643V8-2.7A
厂商: Intersil
文件页数: 5/21页
文件大小: 0K
描述: IC SUPERVISOR CPU 64K EE 8-TSSOP
标准包装: 200
类型: 简单复位/加电复位
监视电压数目: 1
复位: 低有效
复位超时: 最小为 100 ms
电压 - 阀值: 2.92V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 管件
X4643, X4645
Figure 4. V TRIP Programming Sequence
V TRIP Programming
Execute
Reset V TRIP
Sequence
Set V CC = V CC Applied =
Desired V TRIP
New V CC Applied =
Old V CC Applied + Error
NO
Execute
Set V TRIP
Sequence
Apply 5V to V CC
Decrement V CC
(V CC = V CC - 50mV)
RESET pin
goes active?
YES
New V CC Applied =
Old V CC Applied - Error
Execute
Reset V TRIP
Sequence
Error ≤ –Emax
Measured V TRIP -
Error ≥ Emax
Desired V TRIP
–Emax < Error < Emax
Emax = Maximum Allowed V TRIP Error
Control Register
The Control Register provides the user a mechanism
for changing the Block Lock and Watchdog Timer set-
tings. The Block Lock and Watchdog Timer bits are
nonvolatile and do not change when power is removed.
The Control Register is accessed at address FFFFh. It
can only be modified by performing a byte write opera-
tion directly to the address of the register and only one
data byte is allowed for each register write operation.
5
DONE
Prior to writing to the Control Register, the WEL and
RWEL bits must be set using a two step process, with
the whole sequence requiring 3 steps. See "Writing to
the Control Register" below.
The user must issue a stop after sending this byte to the
register to initiate the nonvolatile cycle that stores WD1,
and WD0. The X4643/5 will not acknowledge any data
bytes written after the first byte is entered.
FN8123.0
March 29, 2005
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