MC68HC908JL3CDW Freescale Semiconductor, MC68HC908JL3CDW Datasheet - Page 110

• Manufacturer Part Number: MC68HC908JL3CDW
• Description: IC MCU 8MHZ 4K FLASH 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JL3CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 23
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

Monitor ROM (MON)
9.4.3 Data Format
9.4.4 Echoing
Technical Data
108
Communication with the monitor ROM is in standard non-return-to-zero
(NRZ) mark/space data format. (See
The data transmit and receive rate can be anywhere from 4800 baud to
28.8k-baud. Transmit and receive baud rates must be identical.
As shown in
received byte back to the PTB0 pin for error checking.
Any result of a command appears after the echo of the last byte of the
command.
BREAK
SENT TO
MONITOR
$A5
ECHO
START
BIT
START
START
BIT
BIT
BIT 0
READ
Figure
BIT 0
BIT 0
Figure 9-4. Sample Monitor Waveforms
Monitor ROM (MON)
BIT 1
Figure 9-3. Monitor Data Format
BIT 1
BIT 1
Figure 9-5. Read Transaction
9-5, the monitor ROM immediately echoes each
READ
BIT 2
BIT 2
BIT 2
BIT 3
ADDR. HIGH
BIT 3
BIT 3
BIT 4
BIT 4
BIT 4
ADDR. HIGH ADDR. LOW
Figure 9-3
BIT 5
BIT 5
BIT 5
BIT 6
BIT 6
BIT 6
MC68H(R)C908JL3
and
BIT 7
Freescale Semiconductor
BIT 7
BIT 7
Figure
ADDR. LOW
STOP
BIT
STOP
STOP
BIT
BIT
START
NEXT
BIT
9-4.)
START
START
NEXT
NEXT
BIT
BIT
—
RESULT
DATA
Rev. 1.1