Filter
Top Products
525
CHAPTER 24 RESET FUNCTION
Table 24-1. Hardware Status After Reset (1/2)
Hardware Status after Reset
Program counter (PC)
Note 1
The contents of reset vector
tables (0000H and 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) Ports 0 to 3, Port 7, 12, 13
00H
(P0 to P3, P7, P12, P13)
Ports 4 to 6 (P4 to P6) Undefined
Port mode register (PM0 to PM3, PM5 to PM7, PM12, PM13) FFH
Pull-up resistor option register (PUOH, PUOL) 00H
Processor clock control register (PCC) 04H
Oscillation mode selection register (OSMS) 00H
Memory size switching register (IMS)
Note 3
Internal expansion RAM size switching register (IXS)
Note 4
0AH
Memory expansion mode register (MM) 10H
Oscillation stabilization time select register (OSTS) 04H
16-bit timer/event counter Timer register (TM0) 00H
Capture/compare register (CR00, CR01) Undefined
Clock selection register (TCL0) 00H
Mode control register (TMC0) 00H
Capture/compare control register 0 (CRC0) 04H
Output control register (TOC0) 00H
8-bit timer/event counter Timer register (TM1, TM2) 00H
Compare registers (CR10, CR20) Undefined
Clock select register (TCL1) 00H
Mode control registers (TMC1) 00H
Output control register (TOC1) 00H
Notes 1. During reset input or oscillation stabilization time wait, only the PC contents among the hardware
statuses become undefined. All other hardware statuses remains unchanged after reset.
2. If there is a reset while in the standby mode, the status before reset is maintained even after reset is
performed.
3. The values after reset depend on the product.
µ
PD78056F, 78056FY : CCH,
µ
PD78058F, 78058FY : CFH,
µ
PD78P058F, 78P058FY: CFH
4. Incorporated only in the
µ
PD78058F, 78058FY, 78P058F, and 78P058FY.