ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 181
ez80f91
Manufacturer Part Number
ez80f91
Description
Ez80 Acclaimplus!? Connectivity Assp Ez80f91 Assp
Manufacturer
ZiLOG Semiconductor
Datasheet
1.EZ80F91.pdf
(387 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ez80f917050SBCG
Manufacturer:
Zilog
Quantity:
135
Company:
Part Number:
ez80f91AZ050SG
Manufacturer:
Zilog
Quantity:
158
Part Number:
ez80f91NA050SG
Manufacturer:
ZILOG
Quantity:
20 000
- Current page: 181 of 387
- Download datasheet (5Mb)
Table 92. Real-Time Clock Alarm Control Register
PS027001-0707
Bit
Reset
CPU Access
Note: X = Unchanged by RESET; R = Read Only; R/W = Read/Write
Bit Position
[7:4]
3
ADOW_EN
2
AHRS_EN
1
AMIN_EN
0
ASEC_EN
Real-Time Clock Alarm Control Register
This register contains control bits for the Real-Time Clock. The RTC_ACTRL register is
cleared by a RESET. See
Real-Time Clock Control Register
This register contains control and status bits for the Real-Time Clock. Some bits in the
RTC_CTRL register are cleared by a RESET. The ALARM bit flag and associated inter-
rupt (if INT_EN is enabled) are cleared by reading this register. The ALARM bit flag is
updated by clearing (locking) the RTC_UNLOCK bit or by an increment of the RTC
count. Writing to the RTC_CTRL register also resets the RTC count prescaler allowing the
RTC to be synchronized to another time source.
SLP_WAKE indicates if an RTC alarm condition initiated the CPU recovery from SLEEP
mode. This bit is checked after RESET to determine if a sleep-mode recovery is caused by
the RTC. SLP_WAKE is cleared by a Read of the RTC_CTRL register.
Setting the BCD_EN bit causes the RTC to use binary-coded decimal
all registers including the alarm set points.
The CLK_SEL and FREQ_SEL bits select the RTC clock source. If the 32 KHz crystal
option is selected, the oscillator is enabled and the internal prescaler is set to divide by
Value Description
0000
0
1
0
1
0
1
0
1
Reserved.
The day-of-the-week alarm is disabled.
The day-of-the-week alarm is enabled.
The hours alarm is disabled.
The hours alarm is enabled.
The minutes alarm is disabled.
The minutes alarm is enabled.
The seconds alarm is disabled.
The seconds alarm is enabled.
R
7
0
R
6
0
Table
R
5
0
92.
R
4
0
R/W
(RTC_ACTRL = 00ECh)
3
0
R/W
2
0
R/W
1
0
Product Specification
R/W
0
0
(
BCD) counting in
eZ80F91 ASSP
Real-Time Clock
173
Related parts for ez80f91
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Ez80f91 Mini Enet Module
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Development Boards & Kits - Other Processors ZiLOG TCP/IP Software Suite (ZTP Rev 1.4) - Object Code (Free download on www.zilog.com)
Manufacturer:
ZiLOG
Part Number:
Description:
Z90233, Z90234, And Z90231 Ezvision 200 Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controllers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Television Controllers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
40-pin Low-cost Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
40-pin Low-cost Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controller In-circuit Emulator Ice Device
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
High Performance Microcontrollers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Cmos Usc Universal Serial Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Iusc Integrated Universal Serial Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
16-bit Processor
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Pcmcia Interface Solution
Manufacturer:
ZiLOG Semiconductor
Datasheet: