參數(shù)資料
型號: UPD754244
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 4位單晶片微控制器
文件頁數(shù): 35/88頁
文件大小: 416K
代理商: UPD754244
35
μ
PD754144, 754244
Table 10-1. Hardware Status After Reset (2/3)
Hardware
RESET signal generation
in the standby mode
RESET signal generation
in operation
Programmable threshold port mode register (PTHM)
00H
00H
Clock generator
Processor clock control register (PCC)
0
0
Interrupt
Interrupt request flag (IRQ
×××
)
Reset (0)
Reset (0)
function
Interrupt enable flag (IE
×××
)
0
0
Interrupt priority selection register (IPS)
0
0
INT0, 2 mode registers (IM0, IM2)
0, 0
0, 0
Digital port
Output buffer
Off
Off
Output latch
Cleared (0)
Cleared (0)
I/O mode registers (PMGA, C)
0
0
Pull-up resistor setting register (POGA, B)
0
0
Bit sequential buffer (BSB0-BSB3)
Held
Undefined
Table 10-1. Hardware Status After Reset (3/3)
RESET signal
generation by key
return reset
RESET signal
generation in the
standby mode
RESET signal
generation by WDT
during operation
RESET signal
generation during
operation
Hardware
Watchdog flag (WDF)
Hold the previous status
0
1
0
Key return flag (KRF)
1
0
Hold the previous status
0
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