參數(shù)資料
型號: M34571G6FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24
封裝: 5.30 X 10.10 MM, 0.80 MM PITCH, PLASTIC, SSOP-24
文件頁數(shù): 64/126頁
文件大小: 1776K
代理商: M34571G6FP
Rev.1.02
May 25, 2007
Page 42 of 124
REJ03B0179-0102
4571 Group
VOLTAGE DROP DETECTION CIRCUIT
The built-in voltage drop detection circuit is used to set the
voltage drop detection circuit interrupt request flag (VDF) or to
perform system reset.
The voltage drop detection circuit stops at RAM back-up mode.
Fig 44. Voltage drop detection reset circuit
WEF
VRST-/VRST+
-
+
VINT
-
+
Interrupt occurrence
Reset occurrence
VDF
Voltage drop
detection circuit
interrupt
S
R
Q
Oscillation stop
signal
Key-on
wakeup signal
EPOF instruction
+
POF instruction
Power-on reset circuit
Watchdog reset signal
SRST instruction
Internal reset signal
(Note 1)
RESET pin
(Note 2)
Pull-up transistor
Voltage drop
detection circuit
(Note 1)
Notes 1:
This symbol represents a parasitic diode.
2: Applied potential to RESET pin must be VDD or less.
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