HD404344R Datasheet, PDF (26/102 Pages) Renesas Technology Corp – 4-bit microcomputer has an A/D converter

HD404344R Series/HD404394 Series
Table 1 Initial Values After MCU Reset (cont)
Item
Abbr.
Initial Value Contents
A/D
A/D mode register 1 (AMR1)
0000
Refer to description of A/D mode
register
A/D mode register 2 (AMR2)
---0
Refer to description of A/D mode
register
Bit register Watchdog timer on flag (WDON)
0
Refer to description of timer C
A/D start flag
(ADSF)
0
Refer to description of A/D
converter
I_AD off flag
(IAOF)
0
Refer to description of A/D
converter
Others
Miscellaneous register (MIS)
00 - -
Refer to description of I/O, and
serial interface
Notes: 1. The statuses of other registers and flags after MCU reset are shown in the following table.
2. X indicates invalid value. – indicates that the bit does not exist.
Table 1 Initial Values After MCU Reset (cont)
After Stop Mode
Release by STOPC
Input
After Stop Mode After Other Types
Release by RESET of MCU Reset
Input
Carry
(CA)
Program needs to initialize these registers.
Program needs to
initialize these
registers.
Accumulator
(A)
B register
(B)
W register
(W)
X/SPX register
(X/SPX)
Y/SPY register
(Y/SPY)
Serial data register (SRU, SRL)
A/D data register
(ADRU, ADRL)
RAM
Data before entering stop mode are kept.
RAM enable flag
(RAME)
1
0
0
Port mode register B (PMRB3)
Data before entering 0
0
bit 3
stop mode are kept.
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