Low-Speed Time Base Counter (Ltbr) - LAPIS Semiconductor ML610Q421 User Manual

7.2.2

Low-Speed Time Base Counter (LTBR)

Address: 0F00AH
Access: R/W
Access size: 8 bits
Initial value: 00H
7
LTBR T1HZ
R/W R/W
Initial value 0
LTBR is a special function register (SFR) to read the T128HZ-T1HZ outputs of the low-speed time base counter.
The T128HZ-T1HZ outputs are set to "0" when write operation is performed for LTBR.
Note:
A TBC interrupt (128Hz interrupt, 32Hz interrupt, 16Hz interrupt, or 2Hz interrupt) may occur depending on the LTBR
write timing (see Figure 7-4, "Interrupt Timing and Reset Timing by Writing to LTBR"). Therefore, take care in
software programming.
6 5
T2HZ T4HZ
R/W R/W
0 0
ML610Q421/ML610Q422/ML610421 User's Manual
4 3
T8HZ T16HZ T32HZ
R/W R/W
0 0
7 – 4
Chapter 7 Time Base Counter
2 1
T64HZ T128HZ
R/W R/W
0 0
0
R/W
0