MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 144

• Manufacturer Part Number: MC68HC912B32CFU8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC68HC912B32CFU8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Standard Timer (TIM)
12.3.4 Timer Count Register
Read: Anytime
Write: Has no meaning or effect in normal mode; only writable in special modes
A full access for the counter register should take place in one clock cycle. A separate read/write for high
byte and low byte will give a different result than accessing them as a word.
The period of the first count after a write to the TCNT registers may be a different size because the write
is not synchronized with the prescaler clock.
12.3.5 Timer System Control Register
Read: Anytime
Write: Anytime
TEN — Timer Enable Bit
TSWAI — Timer Stops While in Wait Bit
144
If for any reason the timer is not active, there is no ÷64 clock for the pulse accumulator since the E ÷
64 is generated by the timer prescaler.
Timer interrupts cannot be used to get the MCU out of wait.
0 = Disables timer, including the counter; can be used for reducing power consumption
1 = Allows timer to function normally
0 = Allows timer to continue running during wait
1 = Disables timer when MCU is in wait mode
Address: $0084
Address: $0085
Address: $0086
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
TEN
Figure 12-7. Timer System Control Register (TSCR)
0
0
0
Figure 12-6. Timer Count Register (TCNT)
= Unimplemented
= Unimplemented
TSWAI
Bit 14
Bit 6
6
0
6
0
6
0
M68HC12B Family Data Sheet, Rev. 9.1
TSBCK
Bit 13
Bit 5
5
0
5
0
5
0
TFFCA
Bit 12
Bit 4
4
0
4
0
4
0
Bit 11
Bit 3
3
0
3
0
3
0
0
Bit 10
Bit 2
2
0
2
0
2
0
0
Bit 9
Bit 1
1
0
1
0
1
0
0
Freescale Semiconductor
Bit 0
Bit 8
Bit 0
Bit 0
Bit 0
0
0
0
0