HE83R125 Datasheet, PDF (13/18 Pages) King blillion Electronics Co.,Ltd. – This chip is suitable for the applications that require higher performance

King Billion Electronics Co., Ltd _HE83R125
駿億電子股份有限公司
HE80000 Series
be generated when the counter underflows - counts down to FFFFH. And it will be automatically reloaded
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
IER 0x02
T2L 0x05
T2H 0x06
OP1 0x09
Field
TC2_IER
T2L[7:0]
T2H[7:0]
TC2E
Bit position Mode
Description
1
R/W 0: TC2 interrupt is disabled. (default)
1: TC2 interrupt is enabled.
7~0
W Low byte of TC2 pre-load value
7~0
W High byte of TC2 pre-load value
3
R/W 0: TC2 is disabled. (default)
1: TC2 is enabled.
March 13, 2003
13
V1.0E
This specification is subject to change without notice. Please contact sales person for the latest version before use.