MC68HC908LJ24CPB Freescale Semiconductor, MC68HC908LJ24CPB Datasheet - Page 383
MC68HC908LJ24CPB
Manufacturer Part Number
MC68HC908LJ24CPB
Description
IC MCU 24K FLASH 8MHZ SPI 64LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908LK24CFUE.pdf
(464 pages)
Specifications of MC68HC908LJ24CPB
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SPI
Peripherals
LCD, LVD, POR, PWM
Number Of I /o
40
Program Memory Size
24KB (24K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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18.4 Port B
18.4.1 Port B Data Register (PTB)
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Alternative Function:
Additional Function:
Address:
Port B is a 8-bit special function port that shares two of its port pins with
the infrared serial communication interface (IRSCI) module, two of its
port pins with the timer interface module 1 (TIM1) module, two of its port
pins with the timer interface module 2 (TIM2), and two of its port pins with
the ADC module.
Port pins PTB0–PTB5 can be configured for direct LED drive.
The port B data register contains a data latch for each of the eight port B
pins.
PTB[7:0] — Port B Data Bits
TxD, RxD — SCI Data I/O Pins
Reset:
Read:
Write:
These read/write bits are software programmable. Data direction of
each port B pin is under the control of the corresponding bit in data
direction register B. Reset has no effect on port B data.
The TxD and RxD pins are the transmit data output and receive data
input for the IRSCI module. The enable SCI bit, ENSCI, in the SCI
control register 1 enables the PTB0/TxD and PTB1/RxD pins as SCI
TxD and RxD pins and overrides any control from the port I/O. See
Section 13. Infrared Serial Communications Interface Module
(IRSCI).
$0001
ADC5
PTB7
Bit 7
Figure 18-5. Port B Data Register (PTB)
Input/Output (I/O) Ports
ADC4
PTB6
6
LED drive LED drive LED drive LED drive LED drive LED drive
T2CH1
PTB5
5
Unaffected by reset
T2CH0
PTB4
4
T1CH1
PTB3
3
T1CH0
PTB2
2
Input/Output (I/O) Ports
PTB1
RxD
1
Data Sheet
PTB0
Bit 0
TxD
Port B
383
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