ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 179

• Manufacturer Part Number: ez80f91
• Description: Ez80 Acclaimplus!? Connectivity Assp Ez80f91 Assp
• Manufacturer: ZiLOG Semiconductor

Table 90. Real-Time Clock Alarm Hours Register
PS027001-0707
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_HRS
[3:0]
AHRS
Binary Operation (BCD_EN = 0)
Bit Position
[7:0]
AHRS
Real-Time Clock Alarm Hours Register
This register contains the alarm hours value. The value in the RTC_AHRS register 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 decimal (BCD_EN =
1). See
Value
00h–17h The alarm hours value.
Value Description
0–2
0–9
Table
R/W
The tens digit of the alarm hours value.
The ones digit of the alarm hours value.
X
7
Description
90.
R/W
X
6
R/W
X
5
R/W
X
4
(RTC_AHRS = 00EAh)
R/W
X
3
R/W
X
2
R/W
X
1
Product Specification
R/W
X
0
eZ80F91 ASSP
Real-Time Clock
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