MC68HC908GP32CB Freescale Semiconductor, MC68HC908GP32CB Datasheet - Page 210

• Manufacturer Part Number: MC68HC908GP32CB
• Description: IC MCU 32K FLASH 8MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Timer Interface Module (TIM)
17.9.3 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.
210
Address: T1CNTH, $0021 and T2CNTH, $002C
Address: T1CNTL, $0022 and T2CNTL, $002D
Address: T1MODH, $0023 and T2MODH, $002E
Address: T1MODL, $0024 and T2MODL, $002F
If you read TCNTH during a break interrupt, be sure to unlatch TCNTL by
reading TCNTL before exiting the break interrupt. Otherwise, TCNTL
retains the value latched during the break.
Reset the TIM counter before writing to the TIM counter modulo registers.
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Figure 17-7. TIM Counter Modulo Register High (TMODH)
Figure 17-8. 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 17-5. TIM Counter Registers High (TCNTH)
Figure 17-6. TIM Counter Registers Low (TCNTL)
= Unimplemented
= Unimplemented
14
14
6
0
6
6
0
6
1
6
6
1
MC68HC908GP32 Data Sheet, Rev. 10
13
13
5
0
5
5
0
5
1
5
5
1
NOTE
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