NEC switch - Manual (Page 188)

CHAPTER 13 RESET FUNCTION
User’s Manual U12978EJ3V0UD
188
Table 13-1. 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-purpose register Undefined Note 2
Port (P0 to P2, P4) output latch 00H
Port mode register (PM0 to PM2, PM4) FFH
Pull-up resistor option register (PU0) 00H
Port output mode register (POM0, POM1) 00H
Processor clock control register (PCC) 02H
Oscillation stabilization time select register (OSTS) 04H
8-bit timer/event counter Timer counter (TM00, TM01) 00H
Compare register (CR00, CR01) Undefined
Mode control register (TMC00, TMC01) 00H
Watchdog timer Timer clock select register (TCL2) 00H
Mode register (WDTM) 00H
USB function Transmit receive pointer (USBPOW) 00H
Receive token PID (USBRTP) 00H
Receive token address (USBRAL, USBRAH) 00H
Receive data PID (USBRD) 00H
Receive data address (USBR0 to USBR7) Undefined
Transmit data PID bank (USBTD0, USBTD1) Undefined
Transmit data bank address (USBT00 to USBT07,
USBT10 to USBT17)
Undefined
Data/handshake packet receive byte number counter
(DRXCON)
18H
Notes 1. During reset input and oscillation stabilization time wait, only the PC contents among the hardware
statuses become undefined.
All other hardware remains unchanged after reset.
2. The post-reset values are retained in the standby mode.