S-35770E01A-K8T2U Datasheet, PDF (16/26 Pages) Seiko Instruments Inc – CONVENIENCE TIMER

FOR AUTOMOTIVE 125°C OPERATION 2-WIRE COUNTER CONVENIENCE TIMER
S-35770 Series
Rev.1.2_00
5. Read operation of count register
Transmit the start condition and slave address from the master device. The slave address of the S-35770 Series is
specified to "0110010". The data of the count register can be read when the read / write bit is "1".
The 2nd byte to the 4th byte are used as the count register. Each byte from B7 is transmitted.
When the read operation of the count register is finished, transmit "1" (NO_ACK) to the acknowledge after B0 is output
from the master device, and then transmit the stop condition.
The count register is a 3-byte register. "1" is read if the read operation is performed continuously after reading 3 bytes
of the count register. Regarding the count register, refer to " Configuration of Registers".
Disable time period of count-up action
1
9
SCL
18
27
36
SDA
01100101
B7
B1 R/W B7
B0 B7
B0 B7
B0
Slave address
(0110010)
Count register (3-byte)
: Master device input data
Input NO_ACK after the 3rd byte data is transmitted.
: S-35770 output data
Figure 22 Read Timing of Count Register
16