MC68HC908MR16CFU Freescale Semiconductor, MC68HC908MR16CFU Datasheet - Page 150

• 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: -

Pulse-Width Modulator for Motor Control (PWMMC)
12.9.6 Dead-Time Write-Once Register
The dead-time write-once register (DEADTM) holds an 8-bit value which specifies the number of CPU
clock cycles to use for the dead-time when complementary PWM mode is selected. After this register is
written for the first time, it cannot be rewritten unless a reset occurs. Dead-time is not affected by changes
to the prescaler value.
12.9.7 PWM Disable Mapping Write-Once Register
The PWM disable mapping write-once register (DISMAP) holds an 8-bit value which determines which
PWM pins will be disabled if an external fault or software disable occurs. For a further description of
disable mapping, see
rewritten unless a reset occurs.
12.9.8 Fault Control Register
The fault control register (FCR) controls the fault-protection circuitry.
FINT4 — Fault 4 Interrupt Enable Bit
150
This read/write bit allows the CPU interrupt caused by faults on fault pin 4 to be enabled. The fault
protection circuitry is independent of this bit and will always be active. If a fault is detected, the PWM
pins will still be disabled according to the disable mapping register.
1 = Fault pin 4 will cause CPU interrupts.
0 = Fault pin 4 will not cause CPU interrupts.
Address:
Address:
Address: $0022
Reset:
Reset:
Reset:
Figure 12-42. PWM Disable Mapping Write-Once Register (DISMAP)
Read:
Read:
Read:
Write:
Write:
Write:
Figure 12-41. Dead-Time Write-Once Register (DEADTM)
$0036
12.6 Fault
$0037
FINT4
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
1
1
0
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Figure 12-43. Fault Control Register (FCR)
FMODE4
Bit 6
Bit 6
6
1
6
1
6
0
Protection. After this register is written for the first time, it cannot be
FINT3
Bit 5
Bit 5
5
1
5
1
5
0
FMODE3
Bit 4
Bit 4
4
1
4
1
4
0
FINT2
Bit 3
Bit 3
3
1
3
1
3
0
FMODE2
Bit 2
Bit 2
2
1
2
1
2
0
FINT1
Bit 1
Bit 1
1
1
1
1
1
0
Freescale Semiconductor
FMODE1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
1
1
0