MC68HC908GP32CP Freescale Semiconductor, MC68HC908GP32CP Datasheet - Page 74

• Manufacturer Part Number: MC68HC908GP32CP
• Description: IC MCU 8MHZ 32K FLASH 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Resets and Interrupts
4.3.3.1 Power-On Reset
Technical Data
72
A power-on reset (POR) is an internal reset caused by a positive
transition on the V
reset the MCU. This distinguishes between a reset and a POR. The POR
is not a brown-out detector, low-voltage detector, or glitch detector.
A power-on reset:
PORRST
CGMXCLK
INTERNAL
1. PORRST is an internally generated power-on reset pulse.
CGMOUT
RST PIN
•
•
•
•
•
RESET
OSC1
Holds the clocks to the CPU and modules inactive for an oscillator
stabilization delay of 4096 CGMXCLK cycles
Drives the RST pin low during the oscillator stabilization delay
Releases the RST pin 32 CGMXCLK cycles after the oscillator
stabilization delay
Releases the CPU to begin the reset vector sequence 64
CGMXCLK cycles after the oscillator stabilization delay
Sets the POR and LP bits in the SIM reset status register and
clears all other bits in the register
(1)
Resets and Interrupts
Figure 4-2. Power-On Reset Recovery
DD
CYCLES
pin. V
4096
DD
CYCLES
32
at the POR must go completely to 0 V to
MC68HC908GP32
CYCLES
32
•
MC68HC08GP32
MOTOROLA
—
Rev. 6