S35710M Datasheet, PDF (13/29 Pages) Seiko Instruments Inc – FOR AUTOMOTIVE 125°C OPERATION 2-WIRE BUILT-IN QUARTZ CRYSTAL CONVENIENCE TIMER

FOR AUTOMOTIVE 125°C OPERATION 2-WIRE BUILT-IN QUARTZ CRYSTAL CONVENIENCE TIMER
Rev.1.1_00
S-35710M
 Configuration of Registers
1. Time register
The time register is a 3-byte register that stores the timer value in the binary code.
The time register is read-only.
Perform the read operation of the time register in 3-byte unit from TM23 to TM0.
Example:
3 seconds
45 minutes
5 hours 30 minutes
(0000_0000_0000_0000_0000_0011)
(0000_0000_0000_1010_1000_1100)
(0000_0000_0100_1101_0101_1000)
TM23 TM22 TM21 TM20 TM19 TM18 TM17 TM16
B7
B0
TM15 TM14 TM13 TM12 TM11 TM10 TM9 TM8
B7
B0
TM7 TM6 TM5 TM4 TM3 TM2 TM1 TM0
B7
B0
Figure 13
2. Wake-up time register
The wake-up time register is a 3-byte register that stores the wake-up time of the microcontroller in the binary code.
The wake-up time register is possible for write and read.
Perform the write and read operation of the wake-up time register in 3-byte_{___}u_{__}n_{__}it from WU23 to W_{_}U_{__}0_{__}._{__}
When performing the read operation of the wake-up time register, set the RST pin to "H". If the RST pin is set to "L",
the time register data is read.
WU23 WU22 WU21 WU20 WU19 WU18 WU17 WU16
B7
B0
WU15 WU14 WU13 WU12 WU11 WU10 WU9 WU8
B7
B0
WU7 WU6 WU5 WU4 WU3 WU2 WU1 WU0
B7
B0
Figure 14
13