MC68HC908RF2CFA Freescale Semiconductor, MC68HC908RF2CFA Datasheet - Page 141

• Manufacturer Part Number: MC68HC908RF2CFA
• Description: IC MCU W/UHF TX 2K FLASH 32LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908RF2CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LVD, POR, PWM, RF Mod
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

11.8.2 TIM Counter Registers
MC68HC908RF2 — Rev. 4.0
MOTOROLA
NOTE:
The two read-only TIM counter registers contain the high and low bytes of the value
in the TIM counter. Reading the high byte (TCNTH) latches the contents of the low
byte (TCNTL) into a buffer. Subsequent reads of TCNTH do not affect the latched
TCNTL value until TCNTL is read. Reset clears the TIM counter registers. Setting
the TIM reset bit (TRST) also clears the TIM counter registers
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.
Register Name and Address: TCNTH—$0021
Register Name and Address: TCNTL—$0022
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 11-6. TIM Counter Registers (TCNTH and TCNTL)
Bit 15
Bit 7
Bit 7
Bit 7
0
0
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Timer Interface Module (TIM)
= Unimplemented
14
6
0
6
6
0
13
5
0
5
5
0
12
4
0
4
4
0
11
3
0
3
3
0
Timer Interface Module (TIM)
10
2
0
2
2
0
1
9
0
1
1
0
I/O Registers
Data Sheet
Bit 0
Bit 8
Bit 0
Bit 0
0
0
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