S-35390A Seiko Instruments, S-35390A Datasheet - Page 31

• Manufacturer Part Number: S-35390A
• Description: 2-Wire Real Time Clock
• Manufacturer: Seiko Instruments

Rev.1.2
1. Initialization flow at power-on
Example of Software Processing
_00
NO
command transmission
command transmission
Status register_1 setting
Status register_2 setting
Realtime data setting
command transmission
command transmission
INT1 register setting
YES
to reset flag
Power-on
TEST = 1
Write “1”
START
POC = 1
BLD = 1
END
or
NO
*1
YES
Figure 33 Initialization Flow
Seiko Instruments Inc.
*1.
If conditions are poor (e.g., in a noisy environment)
and there is a high probability that commands
transmitted via serial communication will be
garbled, it is recommended to verify the TEST flag.
2-WIRE REAL-TIME CLOCK
S-35390A
31