MC68HC908MR16CFU Freescale Semiconductor, MC68HC908MR16CFU Datasheet - Page 169
MC68HC908MR16CFU
Manufacturer Part Number
MC68HC908MR16CFU
Description
IC MCU 8MHZ 16K FLASH 64-QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908MR16CFUE.pdf
(282 pages)
Specifications of MC68HC908MR16CFU
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
44
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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13.6.2 PTF4/RxD (Receive Data)
The PTF4/RxD pin is the serial data input to the SCI receiver. The SCI shares the PTF4/RxD pin with
port F. When the SCI is enabled, the PTF4/RxD pin is an input regardless of the state of the DDRF4 bit
in data direction register F (DDRF).
13.7 I/O Registers
These I/O registers control and monitor SCI operation:
13.7.1 SCI Control Register 1
SCI control register 1 (SCC1):
LOOPS — Loop Mode Select Bit
Freescale Semiconductor
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•
•
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This read/write bit enables loop mode operation. In loop mode the PTF4/RxD pin is disconnected from
the SCI, and the transmitter output goes into the receiver input. Both the transmitter and the receiver
must be enabled to use loop mode. Reset clears the
LOOPS bit.
1 = Loop mode enabled
0 = Normal operation enabled
SCI control register 1 (SCC1)
SCI control register 2 (SCC2)
SCI control register 3 (SCC3)
SCI status register 1 (SCS1)
SCI status register 2 (SCS2)
SCI data register (SCDR)
SCI baud rate register (SCBR)
Enables loop-mode operation
Enables the SCI
Controls output polarity
Controls character length
Controls SCI wakeup method
Controls idle character detection
Enables parity function
Controls parity type
Address: $0038
Reset:
Read:
Write:
LOOPS
Bit 7
0
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Figure 13-8. SCI Control Register 1 (SCC1)
ENSCI
6
0
TXINV
5
0
M
4
0
WAKE
3
0
ILTY
2
0
PEN
1
0
Bit 0
PTY
0
I/O Registers
169
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