参数资料
型号: 7534
厂商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 单芯片8位CMOS微机
文件页数: 34/55页
文件大小: 610K
代理商: 7534
7534 Group
Rev.2.00 Jun 21, 2004 page 34 of 54
REJ03B0099-0200Z
Reset Circuit
The microcomputer is put into a reset status by holding the RESET
pin at the “L” level for 15 μs or more when the power source voltage
is 4.1 to 5.5 V and X
IN
is in stable oscillation.
After that, this reset status is released by returning the RESET pin to
the “H” level. The program starts from the address having the con-
tents of address FFFD
16
as high-order address and the contents of
address FFFC
16
as low-order address.
Note that the reset input voltage should be 0.82 V or less when the
power source voltage passes 4.1 V.
Fig. 40 Example of reset circuit
Fig. 41 Timing diagram at reset
(Note)
0.2 V
CC
0 V
0 V
Poweron
V
CC
RESET
V
CC
RESET
Power source
voltage
detection circuit
Power source
voltage
Reset input
voltage
Note :
Reset release voltage Vcc = 4.1 V
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