s-35399a03 Seiko Instruments Inc., s-35399a03 Datasheet - Page 22

• Manufacturer Part Number: s-35399a03
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

22
2-WIRE REAL-TIME CLOCK
S-35399A03
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-35399A03 checks it. In case that the data is invalid, the S-35399A03 does the
following procedures.
1. Processing of nonexistent data
2. Correction of end-of-month
Year data
Month data
Day data
Day of 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 13 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.1.0
_00