MC68HC908MR8CFA Freescale Semiconductor, MC68HC908MR8CFA Datasheet - Page 68

• Manufacturer Part Number: MC68HC908MR8CFA
• Description: IC MCU 8K FLASH 8MHZ PWM 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR8CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 7x10b
• 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: -

Configuration Register (CONFIG)
5.3 CONFIG
5.4 CONFIG Bits
Technical Data
68
NOTE:
Address: $001F
CONFIG
The configuration register (CONFIG) is a write-once register. Once the
register is written, further writes will have no effect until a reset occurs.
If the LVI module and the LVI reset signal are enabled, a reset occurs
when V
for at least nine consecutive central processor unit (CPU) cycles. Once
an LVI reset occurs, the microcontroller unit (MCU) remains in reset until
V
states:
EDGE — Edge-Align Enable Bit
BOTNEG — Bottom-Side PWM Polarity Bit
Read:
Write:
Reset
DD
EDGE determines if the motor control PWM will operate in
edge-aligned mode or center-aligned mode. See
Pulse-Width Modulator for Motor Control
BOTNEG determines if the bottom-side PWMs will have positive or
negative polarity. See
Control
rises to a voltage, LVI
1 = Edge-aligned mode enabled
0 = Center-aligned mode enabled
1 = Negative polarity
0 = Positive polarity
DD
EDGE
Bit 7
0
Configuration Register (CONFIG)
falls to a voltage, LVI
(PWMMC).
BOT-
NEG
6
0
Figure 5-1. CONFIG Register
TOP-
NEG
Section 9. Pulse-Width Modulator for Motor
5
0
TRIPR
TRIPF
INDEP LVIRST
.
4
0
, and remains at or below that level
3
1
MC68HC908MR8 — Rev 4.1
(PWMMC).
LVIP-
WR
Freescale Semiconductor
2
1
Section 9.
STOPE
1
0
COPD
Bit 0
0