MCR908JK3MDWE Freescale Semiconductor, MCR908JK3MDWE Datasheet - Page 79

• Manufacturer Part Number: MCR908JK3MDWE
• Description: IC MCU 4K FLASH 20-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCR908JK3MDWE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

7.4.2 Active Resets from Internal Sources
MC68H(R)C908JL3
Freescale Semiconductor
OSCOUT
RST
IAB
—
PC
Rev. 1.1
All internal reset sources actively pull the RST pin low for 32 2OSCOUT
cycles to allow resetting of external peripherals. The internal reset signal
IRST continues to be asserted for an additional 32 cycles
An internal reset can be caused by an illegal address, illegal opcode,
COP time-out, or POR. (See
Note that for POR resets, the SIM cycles through 4096 2OSCOUT
cycles during which the SIM forces the RST pin low. The internal reset
signal then follows the sequence from the falling edge of RST shown in
Figure
The COP reset is asynchronous to the bus clock.
2OSCOUT
IRST
RST
IAB
Figure 7-4. External Reset Timing
7-5.
System Integration Module (SIM)
ILLEGAL ADDRESS RST
ILLEGAL OPCODE RST
Figure 7-6. Sources of Internal Reset
RST PULLED LOW BY MCU
Figure 7-5. Internal Reset Timing
COPRST
32 CYCLES
POR
Figure 7-6 . Sources of Internal
LVI
VECT H VECT L
INTERNAL RESET
System Integration Module (SIM)
32 CYCLES
(Figure
VECTOR HIGH
Technical Data
Reset.)
7-5).
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