HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 612

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.2
13.2.1
TCNT is an 8-bit readable/writable* up-counter.
When the TME bit is set to 1 in TCSR, TCNT starts counting pulses generated from the internal
clock source selected by bits CKS2 to CKS0 in TCSR. When the count overflows (changes from
H'FF to H'00), either the watchdog timer overflow signal (WDTOVF) or an interval timer
interrupt (WOVI) is generated, depending on the mode selected by the WT/IT bit in TCSR.
TCNT is initialized to H'00 by a reset, in hardware standby mode, or when the TME bit is cleared
to 0. It is not initialized in software standby mode.
Note: * The WDTOVF pin function cannot be used in the F-ZTAT version.
Rev.4.00 Sep. 07, 2007 Page 582 of 1210
REJ09B0245-0400
Bit
Initial value :
R/W
Register Descriptions
Timer Counter (TCNT)
:
:
R/W
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
0
3
R/W
2
0
R/W
1
0
R/W
0
0