MC68HC908GT8CFB Freescale Semiconductor, MC68HC908GT8CFB Datasheet - Page 151

• Manufacturer Part Number: MC68HC908GT8CFB
• Description: IC MCU 8K FLASH 8MHZ 44-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GT8CFB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 34
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

14.4 Functional Description
Figure 14-2
serial communication between the MCU and remote devices, including other MCUs. The transmitter and
receiver of the ESCI operate independently, although they use the same baud rate generator. During
normal operation, the CPU monitors the status of the ESCI, writes the data to be transmitted, and
processes received data.
For reference, a summary of the ESCI module input/output registers is provided in
Freescale Semiconductor
RxD
SCALER
PRE-
SCTIE
SCRIE
RWU
LINR
TCIE
SBK
ILIE
RE
TE
shows the structure of the ESCI module. The ESCI allows full-duplex, asynchronous, NRZ
SHIFT REGISTER
ESCI DATA
REGISTER
RECEIVE
÷ 4
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
CONTROL
WAKEUP
SCTE
SCRF
IDLE
SCALER
TC
ENSCI
PRE-
Figure 14-2. ESCI Module Block Diagram
GENERATOR
BAUD RATE
÷ 16
CONTROL
RECEIVE
INTERNAL BUS
LOOPS
BKF
RPF
DATA SELECTION
CONTROL
OR
NF
FE
PE
FLAG
CONTROL
WAKE
ILTY
LOOPS
PEN
PTY
ENSCI
M
TRANSMIT
CONTROL
SHIFT REGISTER
TXINV
ORIE
NEIE
PEIE
FEIE
ESCI DATA
R8
T8
REGISTER
TRANSMIT
LINT
Figure
SCI_TxD
Functional Description
ARBITER-
RxD
14-4.
TxD
151