MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 123

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

9.4 Functional Description
Figure 9-1
communication among the MCU and remote devices, including other MCUs. The transmitter and receiver
of the SCI operate independently, although they use the same baud rate generator. During normal
operation, the CPU monitors the status of the SCI, writes the data to be transmitted, and processes
received data. The baud rate clock source for the SCI is the bus clock.
9.4.1 Data Format
The SCI uses the standard non-return-to-zero mark/space data format illustrated in
Freescale Semiconductor
$0014
$0015
$0016 SCI Status Register 1 (SCS1)
$0017 SCI Status Register 2 (SCS2)
$0018
$0019
Addr.
$0013
SCI Baud Rate Register
shows the structure of the SCI module. The SCI allows full-duplex, asynchronous, NRZ serial
Register Name
SCI Control Register 1
SCI Control Register 2
SCI Control Register 3
SCI Data Register
START
START
BIT
BIT
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
(SCDR)
(SCBR)
BIT 0
BIT 0
(SCC1)
(SCC2)
(SCC3)
BIT 1
BIT 1
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Figure 9-2. SCI I/O Register Summary
BIT 2
BIT 2
LOOPS
SCTIE
SCTE
Bit 7
R8
R7
T7
Figure 9-3. SCI Data Formats
U
0
0
1
0
0
0
BIT 3
BIT 3
BIT M IN SCC1 CLEAR
8-BIT DATA FORMAT
= Unimplemented
9-BIT DATA FORMAT
BIT M IN SCC1 SET
ENSCI
TCIE
TC
R6
T8
T6
BIT 4
BIT 4
U
6
0
0
1
0
0
0
BIT 5
BIT 5
DMARE
SCRIE
TXINV
SCRF
SCP1
R5
T5
5
0
0
0
0
0
0
BIT 6
BIT 6
R = Reserved
DMATE
Unaffected by reset
SCP0
IDLE
ILIE
PARITY
R4
T4
M
BIT 7
BIT 7
4
0
0
0
0
0
0
BIT
PARITY
STOP
BIT 8
BIT
BIT
WAKE
ORIE
OR
TE
R3
T3
R
3
0
0
0
0
0
0
START
STOP
NEXT
BIT
BIT
U = Unaffected
SCR2
NEIE
ILTY
RE
NF
R2
T2
START
2
0
0
0
0
0
0
NEXT
BIT
Functional Description
Figure
SCR1
RWU
FEIE
PEN
BKF
FE
R1
T1
1
0
0
0
0
0
0
9-3.
SCR0
PEIE
Bit 0
PTY
SBK
RPF
PE
R0
T0
0
0
0
0
0
0
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