EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 117

• Manufacturer Part Number: EZ80F920120MOD
• Description: MODULE EZ80F92 512K 20MHZ
• Manufacturer: Zilog

Specifications of EZ80F920120MOD

• Module/board Type: Development Module
• Processor Series: EZ80F92x
• Core: eZ80
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 1 MB
• Interface Type: Cable
• Maximum Clock Frequency: 20 MHz
• Operating Supply Voltage: 0 V to 3.3 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP
• Development Tools By Supplier: eZ80F920200ZCOG
• Minimum Operating Temperature: 0 C
• For Use With/related Products: eZ80F92
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3157; EZ80F920120MOD

PS015308-0404
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 Real-Time Clock Control Register (RTC_CTRL =
00EDh).
Table 52. 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 Description
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
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 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.
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.
P R E L I M I N A R Y
X
R
7
R/W
6
0
R/W
X
5
R/W
X
4
R/W
X
3
Product Specification
R
X
2
eZ80F92/eZ80F93
Real-Time Clock
0/1
R
1
R/W
0
0
105