MC68HC908MR16CFU Freescale Semiconductor, MC68HC908MR16CFU Datasheet - Page 244

• Manufacturer Part Number: MC68HC908MR16CFU
• Description: IC MCU 8MHZ 16K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR16CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 44
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Timer Interface B (TIMB)
17.7 I/O Registers
These input/output (I/O) registers control and monitor TIMB operation:
17.7.1 TIMB Status and Control Register
The TIMB status and control register:
TOF — TIMB Overflow Flag
TOIE — TIMB Overflow Interrupt Enable Bit
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This read/write flag is set when the TIMB counter reaches the modulo value programmed in the TIMB
counter modulo registers. Clear TOF by reading the TIMB status and control register when TOF is set
and then writing a logic 0 to TOF. If another TIMB overflow occurs before the clearing sequence is
complete, then writing logic 0 to TOF has no effect. Therefore, a TOF interrupt request cannot be lost
due to inadvertent clearing of TOF. Reset clears the TOF bit. Writing a logic 1 to TOF has no effect.
This read/write bit enables TIMB overflow interrupts when the TOF bit becomes set. Reset clears the
TOIE bit.
1 = TIMB counter has reached modulo value.
0 = TIMB counter has not reached modulo value.
1 = TIMB overflow interrupts enabled
0 = TIMB overflow interrupts disabled
TIMB status and control register (TBSC)
TIMB control registers (TBCNTH–TBCNTL)
TIMB counter modulo registers (TBMODH–TBMODL)
TIMB channel status and control registers (TBSC0 and TBSC1)
TIMB channel registers (TBCH0H–TBCH0L and TBCH1H–TBCH1L)
Enables TIMB overflow interrupts
Flags TIMB overflows
Stops the TIMB counter
Resets the TIMB counter
Prescales the TIMB counter clock
Address:
Reset:
Read:
Write:
Figure 17-5. TIMB Status and Control Register (TBSC)
$0051
Bit 7
TOF
R
0
0
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
= Reserved
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
R
3
0
0
PS2
2
0
PS1
1
0
Freescale Semiconductor
Bit 0
PS0
0