Holtek HT67F2350 Manual page 195

Advanced a/d flash mcu with lcd & eeprom
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HT67F2350/HT67F2360
HT67F2370/HT67F2390
Advanced A/D Flash MCU with LCD & EEPROM
SCL
SDA
SCL
SDA
When an
I
C time-out counter overflow occurs, the counter will stop and the SIMTOEN bit will
2
be cleared to zero and the SIMTOF bit will be set high to indicate that a time-out condition has
occurred. The time-out condition will also generate an interrupt which uses the I
When an I
C time-out occurs, the I
2
into the following condition:
The SIMTOF flag can be cleared by the application program. There are 64 time-out period selections
which can be
selected using the SIMTOS bits in the SIMTOC register. The time-out duration is
calculated by the formula: ((1~64) × (32/f
about 1ms to 64ms.
• SIMTOC Register
Bit
7
Name
SIMTOEN SIMTOF SIMTOS5 SIMTOS4 SIMTOS3 SIMTOS2 SIMTOS1 SIMTOS0
R/W
R/W
POR
0
Bit 7
SIMTOEN: SIM I
0: Disable
1: Enable
Bit 6
SIMTOF: SIM I
0: No time-out occurred
1: Time-out occurred
Bit 5~0
SIMTOS5~SIMTOS0: SIM I
I
C Time-out clock source is f
2
I
C Time-out period is equal to (SIMTOS[5:0]+1) × (32/f
2
Rev. 1.60
Start
Slave Address
1
0
1
1
1
0
0
1
0
2
I
C time-out counter reset
on SCL negative transition
I
C Time-out
2
C internal circuitry will be reset and the registers will be reset
2
Register
SIMD, SIMA, SIMC0
SIMC1
I
C Register after Time-out
2
)). This gives a time-out period which ranges from
SUB
6
5
4
R/W
R/W
R/W
0
0
0
C Time-out control
2
C Time-out flag
2
C Time-out period selection
2
/32
SUB
195
SRW
ACK
0
1
0
1
0
2
I
C time-out
counter start
Stop
1
0
0
C interrupt vector.
2
After I
C Time-out
2
No change
Reset to POR condition
3
2
R/W
R/W
R/W
0
0
)
SUB
1
0
R/W
0
0
May 16, 2019

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This manual is also suitable for:

Ht67f2360Ht67f2370Ht67f2390

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