HD404849 Datasheet, PDF (17/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
Item
Abbr.
Initial
Value
Contents
Timer/
Serial mode register A (SMRA) 0000 Refer to description of serial mode register A
counters, Serial mode register B (SMRB) - - X0 Refer to description of serial mode register B
serial
Prescaler S
(PSS)
$000 —
interface
Prescaler W
(PSW) $00
—
Timer counter A
(TCA)
$00
—
Timer counter B
(TCB)
$00
—
Timer counter C
(TCC)
$00
—
Timer counter D
(TCD)
$00
—
Timer write register B (TWBU, $X0
—
TWBL)
Timer write register C (TWCU, $X0
—
TWCL)
Timer write register D (TWDU, $X0
—
TWDL)
Octal counter
000
—
A/D
A/D mode register
(AMR)
0000
Refer to description of A/D mode register
A/D data register
(ADRU, $80
ADRL)
Refer to description of A/D mode register
LCD
LCD control register (LCR)
0000 Refer to description of LCD control register
LCD mode register
(LMR)
0000
Refer to description of LCD duty-cycle/clock
control register
LCD output register 3 (LOR3) - 00 -
Sets R-port/LCD segment pins to R port
mode
Bit registers Low speed on flag
(LSON) 0
Refer to description of operating modes
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
A/D current off flag
(IAOF) 0
Direct transfer on flag (DTON) 0
Refer to description of operating modes
Input capture status (ICSF) 0
flag
Refer to description of timer D
Input capture error flag (ICEF) 0
Refer to description of timer D
Others
Miscellaneous register (MIS)
0000
Refer to description of operating modes, I/O,
and serial interface
System clock select (SSR2, 00 -
register bits 2, 1
SSR1)
Refer to description of operating modes and
oscillation circuits
Bank register
(V)
- - - 0 Refer to description of RAM memory map
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.
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