HE84760 Datasheet, PDF (21/31 Pages) King blillion Electronics Co.,Ltd. – 8-bit Micro-controller

King Billion Electronics Co., Ltd
駿億電子股份有限公司
HE84760
HE80000 SERIES
with the value of T2H and T2L.
Please note that the interrupt signal is generated when counter counts from 0000H to FFFFH. If the value
of counter is N, and count down to FFFFH, the total count is N+1. The content of counter is zero when
system resets. Once it is enabled to count at this time, the interrupt will be generated immediately and
value of T2H and T2L will be loaded since the counter counts to FFFFH. So the T2H and T2L value
should be set before enabling Timer2.
The contents of T2H and
T2L almost loaded into T2H
T2L
Timer2 immediately
when Timer2 is turned on
after reset.
"Timer2 Counter"
decreases 1
Auto reload when
Timer2 underflow
No
Count TO
0xFFFFh
Yes
Start Timer2
Interrupt Request.
T2_INT
The Timer2 related control registers are list as below:
Register Address Field Bit position Mode
Description
IER 0x02 TC2_IER
1
R/W
0: TC2 interrupt is disabled. (default)
1: TC2 interrupt is enabled.
T2L 0x05 T2L[7:0] 7~0
W Low byte of TC2 pre-load value
T2H 0x06 T2H[7:0] 7~0
W High byte of TC2 pre-load value
OP1 0x09 TC2E
3
R/W
0: TC2 is disabled. (default)
1: TC2 is enabled.
August 15, 2003
Page 21 of 31
V1.2
This specification is subject to change without notice. Please contact sales person for the latest version before use.