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CHAPTER 21 RESET FUNCTION
Table 21-1. Hardware Status after Reset (1/2)
Hardware
Status After Reset
Program counter (PC)
Note 1
Contents of reset vector table
(0000H, 0001H) are set.
Stack pointer (SP)
Undefined
Program status word (PSW)
02H
RAM
Data memory
Undefined
Note 2
General register
Undefined
Note 2
Port (Output latch)
00H
Port mode registers (PM0 to PM6, PM8, PM9)
FFH
Pull-up resistor option register (PU0)
00H
Processor clock control register (PCC)
04H
Memory size switching register (IMS)
CFH
Oscillation stabilization time select register (OSTS)
04H
Oscillator mode register (OSCM)
Note 3
00H
16-bit timer TM0
Timer register (TM0)
00H
Capture registers (CR00 to CR02)
00H
Prescaler mode register (PRM0)
00H
Mode control register (TMC0)
00H
Capture pulse control register (CRC0)
00H
Notes 1. During reset input or oscillation stabilization time wait, only the PC contents among the hardware status
become undefined. All other hardware statuses remain unchanged after reset.
2. The post-reset status is held in the standby mode.
3. For
µ
PD780973(A) only.
Содержание mPD780973 Series
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