MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 116

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

Timer Interface Module (TIM)
8.9.3 TIM Counter Modulo Registers
The read/write TIM modulo registers contain the modulo value for the TIM counter. When the TIM counter
reaches the modulo value, the overflow flag (TOF) becomes set, and the TIM counter resumes counting
from $0000 at the next timer clock. Writing to the high byte (TMODH) inhibits the TOF bit and overflow
interrupts until the low byte (TMODL) is written. Reset sets the TIM counter modulo registers.
116
Address: T1CNTH, $0021 and T2CNTH, $0031
Address: T1CNTL, $0022 and T2CNTL, $0032
Address: T1MODH, $0023 and T2MODH, $0033
Address: T1MODL, $0024 and T2MODL, $0034
Reset the TIM counter before writing to the TIM counter modulo registers.
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
Figure 8-7. TIM Counter Modulo Register High (TMODH)
Figure 8-8. TIM Counter Modulo Register Low (TMODL)
Bit 15
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
0
0
1
1
Figure 8-5. TIM Counter Registers High (TCNTH)
Figure 8-6. TIM Counter Registers Low (TCNTL)
= Unimplemented
= Unimplemented
14
14
6
0
6
6
0
6
1
6
6
1
13
13
5
0
5
5
0
5
1
5
5
1
NOTE
12
12
4
0
4
4
0
4
1
4
4
1
11
11
3
0
3
3
0
3
1
3
3
1
10
10
2
0
2
2
0
2
1
2
2
1
1
9
0
1
1
0
1
9
1
1
1
1
Freescale Semiconductor
Bit 0
Bit 8
Bit 0
Bit 0
Bit 0
Bit 8
Bit 0
Bit 0
0
0
1
1