EZ80L92AZ020SC Zilog, EZ80L92AZ020SC Datasheet - Page 109

• Manufacturer Part Number: EZ80L92AZ020SC
• Description: IC WEBSERVER 20MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80L92AZ020SC

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 20MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3168; EZ80L92AZ020SC

PS013014-0107
CLK_SEL and FREQ_SEL 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 32768. If the
power-line frequency option is selected, the prescale value is set by FREQ_SEL, and the
32 kHz oscillator is disabled. See
Table 51. Real Time Clock Control Register (RTC_CTRL = 00EDh)
Bit
Reset
CPU Access
Note: X = Unchanged by RESET; R = Read-only; R/W = Read/Write.
Bit
Position
7
ALARM
6
INT_EN
5
BCD_EN
4
CLK_SEL
3
FREQ_SEL
2
1
SLP_WAKE
0
RTC_UNLOCK
Value
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
R
X
7
Description
Alarm interrupt is inactive.
Alarm interrupt is active.
Interrupt on alarm condition is disabled.
Interrupt on alarm condition is enabled.
RTC count and alarm value registers are binary.
RTC count and alarm value registers are binary-coded
decimal (BCD).
RTC clock source is crystal oscillator output (32768 Hz).
On-chip 32768 Hz 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.
Reserved.
RTC does not generate a Sleep-Mode Recovery reset.
RTC Alarm generates 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.
Table
R/W
6
0
51.
R/W
X
5
R/W
X
4
R/W
X
3
Product Specification
X
R
2
Real Time Clock
0/1
R
1
R/W
0
0
103