MC68HC908JL8CP Freescale Semiconductor, MC68HC908JL8CP Datasheet - Page 124

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MC68HC908JL8CP

Manufacturer Part Number
MC68HC908JL8CP
Description
IC MCU 8K FLASH 8MHZ 28-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC68HC908JL8CP

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
23
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 13x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-

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Serial Communications Interface (SCI)
9.4.2 Transmitter
Figure 9-4
The baud rate clock source for the SCI is the bus clock.
9.4.2.1 Character Length
The transmitter can accommodate either 8-bit or 9-bit data. The state of the M bit in SCI control register
1 (SCC1) determines character length. When transmitting 9-bit data, bit T8 in SCI control register 3
(SCC3) is the ninth bit (bit 8).
9.4.2.2 Character Transmission
During an SCI transmission, the transmit shift register shifts a character out to the TxD pin. The SCI data
register (SCDR) is the write-only buffer between the internal data bus and the transmit shift register. To
initiate an SCI transmission:
124
BUS CLOCK
shows the structure of the SCI transmitter.
SCR1
SCR2
SCR0
SCP1
SCP0
÷ 4
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
SCALER
PRE-
DIVIDER
BAUD
PEN
PTY
TXINV
Figure 9-4. SCI Transmitter
÷ 16
GENERATION
PARITY
DMATE
DMATE
SCTIE
SCTE
DMATE
SCTE
SCTIE
TC
TCIE
T8
M
H
8
SCTIE
7
SCTE
TCIE
TC
SCI DATA REGISTER
6
SHIFT REGISTER
INTERNAL BUS
TRANSMIT
5
11-BIT
CONTROL LOGIC
4
TRANSMITTER
3
2
1
LOOPS
ENSCI
SBK
TE
0
L
Freescale Semiconductor
TxD

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