參數(shù)資料
型號: M34501E4FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, MICROCONTROLLER, PDSO20
封裝: 5.30 X 12.60 MM, 1.27 MM PITCH, PLASTIC, SOP-20
文件頁數(shù): 12/116頁
文件大小: 859K
代理商: M34501E4FP
4501 Group
Rev.3.01
2005.02.07
page 109 of 112
REJ03B0104-0301
Test conditions
Ta = 25 °C
RAM back-up mode
VDD = 5.0 V
(POF instruction execution) (Note 2)
Parameter
Detection voltage (Note 1)
Operation current of voltage
drop detection circuit
Symbol
VRST
IRST
Limits
Unit
Min.
2.7
3.3
Typ.
3.5
50
Max.
4.2
3.7
100
V
A
Notes 1: The detected voltage (VRST) is defined as the voltage when reset occurs while the supply voltage (VDD) is falling.
2: The voltage drop detection circuit is operating in the RAM back-up with the POF instruction (It stops in the RAM back-up with the POF2 instruction).
XIN : high-speed mode
(System clock = f(XIN))
Parameter
Pin name
Machine cycle
MiMi+1
D0, D1, D2/C, D3/K
P00–P03
P10–P13
P00–P03
P10–P13
P20, P21
XIN : middle-speed mode
(System clock = f(XIN)/2)
P20, P21
Clock
Port D output
Port D input
Port P0, P1, P2
output
Port P0, P1, P2
input
CNTR
Timer output
XIN : low-speed mode
(System clock = f(XIN)/4)
XIN : default mode
(System clock = f(XIN)/8)
D0, D1, D2/C, D3/K
INT
Interrupt input
CNTR
Timer input
Basic timing diagram
Voltage drop detection circuit characteristics
(Ta = –20 °C to 85 °C, unless otherwise noted)
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