SH7055S Datasheet, PDF (376/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Free-Running Counter 10AH, AL (TCNT10AH, TCNT10AL): Free-running counter 10AH,
AL (comprising TCNT10AH and TCNT10AL) is a 32-bit readable/writable register that counts on
an input clock and is cleared to the initial value by input capture input (TI10) (AGCK).
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Initial value: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Initial value: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
TCNT10A can only be accessed by a longword read or write. Word reads or writes cannot be
used.
TCNT10A is initialized to H'00000001 by a power-on reset, and in hardware standby mode and
software standby mode.
Event Counter 10B (TCNT10B): Event counter 10B (TCNT10B) is an 8-bit readable/writable
register that counts on external clock input (TI10) (AGCK). For this operation, TI10 input must be
set with bits CKEG1 and CKEG0 in TCR10. TI10 input will be counted even if halting of the
count operation is specified by bit STR10 in TSTR1.
Bit: 7
6
5
4
3
2
1
0
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
TCNT10B can only be accessed by a byte read or write.
TCNT10B is initialized to H'00 by a power-on reset, and in hardware standby mode and software
standby mode.
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