参数资料
型号: MC68HC05P9AP
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封装: PLASTIC, DIP-28
文件页数: 105/158页
文件大小: 3885K
代理商: MC68HC05P9AP
Resets and Interrupts
50
Resets and Interrupts
Resets
A reset immediately stops the operation of the instruction being
executed, initializes certain control bits, and loads the program counter
with a user-defined reset vector address. The following sources can
generate resets:
Power-on reset (POR) circuit
RESET pin
COP watchdog
Power-On Reset
A positive transition on the V
DD pin generates a power-on reset.
NOTE:
The power-on reset is strictly for power-up conditions and cannot be
used to detect drops in power supply voltage.
A 4064 t
CYC (internal clock cycle) delay after the oscillator becomes
active allows the clock generator to stabilize. If the RESET pin is at logic
0 at the end of 4064 t
CYC, the MCU remains in the reset condition until
the signal on the RESET pin goes to logic 1.
DQ
CK
S
RESET
LATCH
POWER-ON RESET
COP WATCHDOG
(MASK OPTION)
INTERNAL CLOCK
RST
TO CPU AND
RESET
V
DD
SUBSYSTEMS
6-mc68hc05p9a
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相关PDF资料
PDF描述
MC68HC05P9ACDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P9AVDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P9AMDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P9ACP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05P9DWR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
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