MC68HC908MR8CFA Freescale Semiconductor, MC68HC908MR8CFA Datasheet - Page 95

• 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: -

7.4.2 Active Resets from Internal Sources
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
CGMOUT
CGMXCLK
RST
IAB
NOTE:
IRST
RST
IAB
PC
All internal reset sources actively pull the RST pin low for 32 CGMXCLK
cycles to allow resetting of external peripherals. The internal reset signal
(IRST) continues to be asserted for an additional 32 cycles (see
Figure
opcode, COP timeout, LVI, or POR (see
For LVI or POR resets, the SIM cycles through 4096 CGMXCLK cycles
during which the SIM forces the RST pin low. The internal reset signal
then follows the sequence from the falling edge of RST as shown in
Figure
RST PULLED LOW BY MCU
Reset Type
All Others
Figure 7-4. External Reset Timing
POR/LVI
Figure 7-5. Internal Reset Timing
7-5). An internal reset can be caused by an illegal address, illegal
7-5.
System Integration Module (SIM)
32 CYCLES
Table 7-2. PIN Bit Set Timing
Number of Cycles Required to set PIN
32 CYCLES
VECT H
4163 (4096 + 64 + 3)
Figure
67 (64 + 3)
VECT L
VECTOR HIGH
System Integration Module (SIM)
Reset and System Initialization
7-6).
Technical Data
95