HT68F04 Holtek Semiconductor, HT68F04 Datasheet - Page 117

• Manufacturer Part Number: HT68F04
• Description: Small Package Enhanced Flash Type 8-Bit MCU
• Manufacturer: Holtek Semiconductor

The purpose of the Time Base Interrupt is to provide an interrupt signal at fixed time periods. Their clock sources origi-
nate from the internal clock source f
lected by programming the appropriate bits in the TBC register to obtain longer interrupt periods whose value ranges.
The clock source that generates f
different sources, as shown in the System Operating Mode section.
·
Rev. 1.00
TBC Register
Bit 7
Bit 6
Bit 5~4
Bit 3
Bit 2~0
Name
POR
R/W
Bit
TBON
TBON: TB0 and TB1 Control
TBCK: Select f
TB11~TB10: Select Time Base 1 Time-out Period
LXTLP: LXT Low Power Control
TB02~TB00: Select Time Base 0 Time-out Period
R/W
0: Disable
1: Enable
0: f
1: f
00: 4096/f
01: 8192/f
10: 16384/f
11: 32768/f
0: Disable
1: Enable
000: 256/f
001: 512/f
010: 1024/f
011: 2048/f
100: 4096/f
101: 8192/f
110: 16384/f
111: 32768/f
7
0
TBC
SYS
/4
TB
TB
TB
TB
TB
TB
TBCK
TB
TB
TB
TB
R/W
TB
TB
6
0
TB
TB
, which in turn controls the Time Base interrupt period, can originate from several
Clock
TB
. This f
TB11
R/W
TB
5
1
input clock passes through a divider, the division ratio of which is se-
Time Base Interrupt
117
TB10
HT66F03/HT66F04/HT68F03/HT68F04
R/W
4
1
¸
¸
LXTLP
R/W
3
0
TB02
R/W
2
1
TB01
R/W
1
1
April 16, 2010
www.DataSheet4U.com
TB00
R/W
0
1