MCR908JL3ECFAE Freescale Semiconductor, MCR908JL3ECFAE Datasheet - Page 76
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MCR908JL3ECFAE
Manufacturer Part Number
MCR908JL3ECFAE
Description
IC MCU 4K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908JK1ECDWE.pdf
(180 pages)
Specifications of MCR908JL3ECFAE
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
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCR908JL3ECFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Monitor ROM (MON)
7.3.3 Data Format
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.
7.3.4 Echoing
As shown in
for error checking.
Any result of a command appears after the echo of the last byte of the command.
7.3.5 Break Signal
A start bit followed by nine low bits is a break signal. (See Figure 7-6.) When the monitor receives a break
signal, it drives the PTB0 pin high for the duration of two bits before echoing the break signal.
76
Figure 7-3
Figure
BREAK
SENT TO
MONITOR
$A5
and
ECHO
START
BIT
7-5, the monitor ROM immediately echoes each received byte back to the PTB0 pin
START
START
Figure
0
BIT
BIT
BIT 0
1
READ
BIT 0
BIT 0
7-4.)
2
MISSING STOP BIT
BIT 1
Figure 7-4. Sample Monitor Waveforms
3
MC68HC908JL3E Family Data Sheet, Rev. 4
BIT 1
BIT 1
Figure 7-3. Monitor Data Format
4
READ
Figure 7-6. Break Transaction
BIT 2
Figure 7-5. Read Transaction
5
BIT 2
BIT 2
6
BIT 3
ADDR. HIGH
7
BIT 3
BIT 3
BIT 4
BIT 4
BIT 4
ADDR. HIGH ADDR. LOW
BIT 5
BIT 5
BIT 5
TWO-STOP-BIT DELAY BEFORE ZERO ECHO
BIT 6
0
BIT 6
BIT 6
1
BIT 7
2
BIT 7
BIT 7
ADDR. LOW
3
STOP
BIT
STOP
STOP
4
BIT
BIT
START
NEXT
5
BIT
START
START
NEXT
NEXT
BIT
BIT
6
RESULT
DATA
Freescale Semiconductor
7
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