EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 201

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

PS019209-0504
Bit
Position
4
CLK_SEL
3
FREQ_SEL
2
DAY_SAV
1
SLP_WAKE
0
RTC_UNLOCK
Value Description
0
1
0
1
0
1
0
1
0
1
RTC clock source is crystal oscillator output (32768 Hz).
On-chip 32768Hz oscillator is enabled.
RTC clock source is power-line frequency input.
On-chip 32768 Hz oscillator is disabled.
Power-line frequency is 60 Hz.
Power-line frequency is 50 Hz.
Daylight Savings Time not selected.
Daylight Savings Time selected.
RTC did not generate a sleep-mode recovery reset.
RTC Alarm generated a sleep-mode recovery reset.
RTC count registers are locked to prevent write access.
RTC counter is enabled.
RTC count registers are unlocked to allow write access.
RTC counter is disabled.
P R E L I M I N A R Y
Product Specification
eZ80F91 MCU
Real-Time Clock
182