EZ80F91MCU Datasheet, PDF (196/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
177
Real-Time Clock Alarm Minutes Register
This register contains the alarm minutes value. The value in the RTC_AMIN regis-
ter is unchanged by a RESET. The current setting of BCD_EN determines
whether the values in this register are binary (BCD_EN = 0) or binary-coded deci-
mal (BCD_EN = 1). See Table 89.
Table 89. Real-Time Clock Alarm Minutes Register
(RTC_AMIN = 00E9h)
Bit
7
6
5
4
Reset
X
X
X
X
CPU Access
R/W R/W R/W R/W
Note: X = Unchanged by RESET; R/W = Read/Write.
3
X
R/W
2
X
R/W
1
X
R/W
0
X
R/W
Binary-Coded-Decimal Operation (BCD_EN = 1)
Bit
Position
[7:4]
ATEN_MIN
[3:0]
AMIN
Value Description
0–5 The tens digit of the alarm minutes value.
0–9 The ones digit of the alarm minutes value.
Binary Operation (BCD_EN = 0)
Bit
Position
[7:0]
AMIN
Value Description
00h– The alarm minutes value.
3Bh
PS019209-0504
PRELIMINARY
Real-Time Clock