EZ80F91MCU Datasheet, PDF (198/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
179
Real-Time Clock Alarm Day-of-the-Week Register
This register contains the alarm day-of-the-week value. The value in the
RTC_ADOW register is unchanged by a RESET. The current setting of BCD_EN
determines whether the value in this register is binary (BCD_EN = 0) or binary-
coded decimal (BCD_EN = 1). See Table 91.
Table 91. Real-Time Clock Alarm Day-of-the-Week Register
(RTC_ADOW = 00EBh)
Bit
7
6
5
4
3
2
1
0
Reset
0
0
0
0
X
X
X
X
CPU Access
R
R
R
R R/W* R/W* R/W* R/W*
Note: X = Unchanged by RESET; R = Read Only; R/W* = Read Only if RTC locked, Read/Write if
RTC unlocked.
Binary-Coded-Decimal Operation (BCD_EN = 1)
Bit
Position
[7:4]
[3:0]
ADOW
Value Description
0000 Reserved.
1–7 The alarm day-of-the-week.value.
Binary Operation (BCD_EN = 0)
Bit
Position
[7:4]
[3:0]
ADOW
Value Description
0000 Reserved.
01h– The alarm day-of-the-week value.
07h
PS019209-0504
PRELIMINARY
Real-Time Clock