Hardware Status After Reset - NEC PD78052 User Manual

Note1
Program counter (PC)
Stack pointer (SP)
Program status word (PSW)
RAM
Port (Output latch)
Port mode register (PM0 to PM3, PM5 to PM7, PM12, PM13)
Pull-up resistor option register (PUOH, PUOL)
Processor clock control register (PCC)
Oscillation mode selection register (OSMS)
Memory size switching register (IMS)
Internal expansion RAM size switching register (IXS)
Memory expansion mode register (MM)
Oscillation stabilization time select register (OSTS)
16-bit timer/event counter
8-bit timer/event counter
1 and 2
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. When reset in the standby mode, the state before reset is held even after reset.
3. The values after reset depend on the product.
PD78052, 78052Y : 44H, PD78053, 78053Y : C6H, PD78054, 78054Y : C8H,
PD78P054 : C8H, PD78055, 78055Y : CAH, PD78056, 78056Y : CCH,
PD78058, 78058Y : CFH, PD78P058, 78P058Y: CFH
4. Provided only in the PD78058, 78058Y, 78P058, and 78P058Y.
CHAPTER 24 RESET FUNCTION
Table 24-1. Hardware Status after Reset (1/2)
Hardware
Data memory
General register
Ports 0 to 3, Port 7, Port 12, Port 13
(P0 to P3, P7, P12, P13)
Ports 4 to 6 (P4 to P6)
Note4
Timer register (TM0)
Capture/compare register (CR00, CR01)
Clock selection register (TCL0)
Mode control register (TMC0)
Capture/compare control register 0 (CRC0)
Output control register (TOC0)
Timer register (TM1, TM2)
Compare registers (CR10, CR20)
Clock select register (TCL1)
Mode control registers (TMC1)
Output control register (TOC1)
Status after Reset
The contents of reset vector
tables (0000H and 0001H)
are set.
Undefined
02H
Note2
Undefined
Note2
Undefined
00H
Undefined
FFH
00H
04H
00H
Note3
0AH
10H
04H
0000H
Undefined
00H
00H
04H
00H
00H
Undefined
00H
00H
00H
535