
CHAPTER 21 RESET FUNCTION
User’s Manual U19780EJ2V0UD
559
Table 21-2. Hardware Statuses After Reset Acknowledgment (3/4)
Hardware
Status After Reset
Acknowledgment
Note 1
Clock output
Clock output selection register (CKS)
00H
Watchdog timer
Enable register (WDTE)
1AH/9AH
Note 2
12-bit A/D conversion result register (ADCR)
0000H
8-bit A/D conversion result register (ADCRH)
00H
A/D converter mode register (ADM)
00H
A/D converter mode register 1(ADM1)
00H
Analog reference voltage control register (ADVRC)
00H
Analog input channel specification register (ADS)
00H
A/D converter
A/D port configuration register (ADPC)
10H
Receive buffer register 6 (RXB6)
FFH
Transmit buffer register 6 (TXB6)
FFH
Asynchronous serial interface operation mode register 6 (ASIM6)
01H
Asynchronous serial interface reception error status register 6 (ASIS6)
00H
Asynchronous serial interface transmission status register 6 (ASIF6)
00H
Clock selection register 6 (CKSR6)
00H
Baud rate generator control register 6 (BRGC6)
FFH
Asynchronous serial interface control register 6 (ASICL6)
16H
Serial interface UART6
Input switch control register (ISC)
00H
Transmit buffer register 10 (SOTB10)
00H
Serial I/O shift register 10 (SIO10)
00H
Serial operation mode register 10 (CSIM10)
00H
Serial interface CSI10
Serial clock selection register 10 (CSIC10)
00H
Shift register (IICA)
00H
Status register 0 (IICAS0)
00H
Flag register 0 (IICAF0)
00H
Control register 0 (IICACTL0)
00H
Control register 1 (IICACTL1)
00H
Low-level width setting register (IICWL)
FFH
High-level width setting register (IICWH)
FFH
Serial interface IICA
Slave address register 0 (SVA0)
00H
Remainder data register 0 (SDR0)
0000H
Multiplication/division data register A0 (MDA0H, MDA0L)
0000H
Multiplication/division data register B0 (MDB0)
0000H
Multiplier/divider
Multiplier/divider control register 0 (DMUC0)
00H
Key interrupt
Key return mode register (KRM)
00H
Notes
1.
During reset signal generation or oscillation stabilization time wait, only the PC contents among the
hardware statuses become undefined. All other hardware statuses remain unchanged after reset.
2.
The reset value of WDTE is determined by the option byte setting.
Remark
The special function register (SFR) mounted depend on the product. See
3.2.3 Special function
registers (SFRs)
.