MC68HC908LJ12CFU Freescale Semiconductor, MC68HC908LJ12CFU Datasheet - Page 326

• Manufacturer Part Number: MC68HC908LJ12CFU
• Description: IC MCU 12K FLASH 8MHZ 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908LJ12CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: IRSCI, SPI
• Peripherals: LCD, LVD, POR, PWM
• Number Of I /o: 32
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 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-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Liquid Crystal Display Driver (LCD)
16.7 I/O Signals
16.7.1 BP0–BP3 (Backplane Drivers)
Technical Data
326
The LCD driver module has thirty (30) output pins and shares eight of
them with port C I/O pins.
BP0–BP3 are the backplane driver output pins. These are connected to
the backplane of the LCD panel. Depending on the LCD duty selected,
the voltage waveforms in
appear on the backplane pins.
BP3 pin is only used when 1/4 duty is selected. The pin becomes FP0
for static and 1/3 duty operations.
DUTY = 1/3
NOTES:
1. BP3 is not used.
2. At 1/3 duty, 1FRAME has three times the cycle of LCD waveform base clock.
•
•
•
BP0
BP1
BP2
Figure 16-5. 1/3 Duty LCD Backplane Driver Waveforms
FP0/BP3 (multiplexed; selected as FP0 or BP3 by DUTY[1:0])
BP0–BP2
FP1–FP26 (FP19–FP26 shared with port C)
Liquid Crystal Display Driver (LCD)
1FRAME
Figure
16-6,
Figure
16-5, and
MC68HC908LJ12
Freescale Semiconductor
Figure 16-7
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Rev. 2.1
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LCD
LCD1
LCD2
LCD3
LCD
LCD1
LCD2
LCD3
LCD
LCD1
LCD2
LCD3