s-35392a Seiko Instruments Inc., s-35392a Datasheet - Page 20

• Manufacturer Part Number: s-35392a
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

20
2-WIRE REAL-TIME CLOCK
S-35392A
Correction of Nonexistent Data and End-of-Month
*1. In a 12-hour expression, Write the
*2. Processing of nonexistent data, regarding second data, is done by a carry pulse which is generated one sec after, after
When users write the real-time data, the S-35392A checks it. In case that the data is invalid, the S-35392A does the
following procedures.
1. Processing of nonexistent data
2. Correction of end-of-month
Year data
Month data
Day data
Day of the week data
Hour data
Minute data
Second data
A nonexistent day, such as February 30 and April 31, is set to the first day of the next month.
In 24-hour expression, the
able to read 0; 0 to 11, 1; 12 to 23.
Write. At this point the carry pulse is sent to the minute-counter.
Register
*1
*2
24-hour
12-hour
AM
Normal Data
/
PM
Table 11 Processing of Nonexistent Data
00 to 99
01 to 12
01 to 31
00 to 59
00 to 59
0 to 23
0 to 11
0 to 6
AM
flag in the real-time data register is omitted. However in the flag in Read, users are
/
PM
Seiko Instruments Inc.
flag (B1 in hour data in the real-time data register).
12 to 19, 2X, 3X, XA to XF
24 to 29, 3X, XA to XF
00, 13 to 19, XA to XF
00, 32 to 39, XA to XF
XA to XF, AX to FX
60 to 79, XA to XF
60 to 79, XA to XF
Nonexistent Data
7
Result
00
01
01
00
00
00
00
0
Rev.1.3
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