RX-4801JE:UB Epson Toyocom Corporation, RX-4801JE:UB Datasheet - Page 16

• Manufacturer Part Number: RX-4801JE:UB
• Description: REAL TIME CLOCK MODULE
• Manufacturer: Epson Toyocom Corporation

Specifications of RX-4801JE:UB

• Memory Size: *
• Time Format: *
• Date Format: *
• Interface: *
• Voltage - Supply: *
• Operating Temperature: *
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5730413A

RX - 4801 SA / JE
8.2.8. Calendar counter (Reg 4 to 6)
8.2.9. Alarm registers (Reg - 8 to A)
8.2.10. Fixed-cycle timer control registers (Reg - B to C)
• When the value in the above fixed-cycle timer control register changes from 001h to 000h, the /INT pin goes to low
∗)
• The auto calendar function updates all dates, months, and years from January 1, 2001 to December 31, 2099.
• The data format is BCD format. For example, a date register value of "0011 0001" indicates the 31st.
∗ Note with caution that writing non-existent date data may interfere with normal operation of the calendar counter.
1) Date counter
2) Month counter
3) Year counter
• The alarm interrupt function is used, along with the AEI, AF, and WADA bits, to set alarms for specified date, day,
• When the settings in the above alarm registers and the WADA bit match the current time, the /INT pin goes to low
• These registers are used to set the preset countdown value for the fixed-cycle timer interrupt function.
level and "1" is set to the TF bit to report that a fixed-cycle timer interrupt event has occurred.
The TE, TF, TIE, and TSEL0/1 bits are also used to set the fixed-cycle timer interrupt function.
Address
Address
hour, and minute values.
level and "1" is set to the AF bit to report that and alarm interrupt event has occurred.
Address
"o" indicates write-protected bits. A zero is always read from these bits.
C
A
B
4
5
6
8
9
• The updating of dates by the date counter varies according to the month setting.
∗ A leap year is set whenever the year value is a multiple of four (such as 04, 08, 12, 88, 92, or 96). In
February of a leap year, the counter counts dates from "01," "02," "03," to "28," "29," "01," etc.
• The month counter counts from 01 (January), 02 (February), and up to 12 (December), then starts again at
01 (January).
• The year counter counts from 00, 01, 02 and up to 99, then starts again at 00.
• Any year that is a multiple of four (04, 08, 12, 88, 92, 96, etc.) is handled as a leap year.
Address
Address
Address
4
5
6
Timer Counter 0
Timer Counter 1
HOUR Alarm
WEEK Alarm
DAY Alarm
MIN Alarm
Function
Function
Function
MONTH
YEAR
DAY
Write/Read
Function
Function
Function
MONTH
Years
DAY
DAY
1, 3, 5, 7, 8, 10, or 12
4, 6, 9, or 11
February in normal year
February in leap year
bit 7
bit 7
bit 7
bit 7
bit 7
bit 7
Y80
128
AE
AE
AE
80
•
Month
Page - 13
bit 6
bit 6
bit 6
bit 6
bit 6
bit 6
Y40
40
40
64
6
•
•
•
bit 5
bit 5
bit 5
bit 5
bit 5
bit 5
Y20
20
20
20
20
20
20
32
5
•
bit 4
bit 4
bit 4
bit 4
bit 4
bit 4
Y10
10
10
10
10
10
10
10
10
16
4
•
2048
bit 3
bit 3
01, 02, 03 ∼ 30, 31, 01 ∼
01, 02, 03 ∼ 30, 01, 02 ∼
01, 02, 03 ∼ 28, 01, 02 ∼
01, 02, 03 ∼ 28, 29, 01 ∼
bit 3
bit 3
bit 3
bit 3
Y8
8
8
8
8
8
8
8
3
8
8
Date update pattern
1024
bit 2
bit 2
bit 2
bit 2
bit 2
bit 2
Y4
4
4
4
4
4
4
4
2
4
4
bit 1
bit 1
bit 1
bit 1
bit 1
bit 1
512
Y2
ETM27E-04
2
2
2
2
2
2
2
1
2
2
bit 0
bit 0
bit 0
bit 0
bit 0
bit 0
256
Y1
1
1
1
1
1
1
1
0
1
1