EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 195

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
Real-Time Clock Alarm Seconds Register
This register contains the alarm seconds value. The value in the RTC_ASEC reg-
ister 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 88.
Table 88. Real-Time Clock Alarm Seconds Register
(RTC_ASEC = 00E8h)
Bit
Reset
CPU Access
Note: X = Unchanged by RESET; R/W = Read/Write.
Binary-Coded-Decimal Operation (BCD_EN = 1)
Bit
Position
[7:4]
ATEN_SEC
[3:0]
ASEC
Binary Operation (BCD_EN = 0)
Bit
Position
[7:0]
ASEC
Value Description
0–5
0–9
Value Description
00h–
3Bh
R/W
The tens digit of the alarm seconds value.
The ones digit of the alarm seconds value.
The alarm seconds value.
P R E L I M I N A R Y
X
7
R/W
6
X
R/W
X
5
R/W
X
4
R/W
X
3
Product Specification
R/W
X
2
eZ80F91 MCU
Real-Time Clock
R/W
X
1
R/W
X
0
176