UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 685

• Manufacturer Part Number: UPD78F1506GF-GAT-AX
• Description: MCU 16BIT 78K0R/LX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Lx3r

Specifications of UPD78F1506GF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 78
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Lx3
16.6 Common and Segment Signals
signals becomes higher than a specific voltage (LCD drive voltage, V
becomes lower than V
this LCD panel is driven by AC voltage.
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
Each pixel of the LCD panel turns on when the potential difference between the corresponding common and segment
Applying DC voltage to the common and segment signals of an LCD panel causes deterioration. To avoid this problem,
(1)
Number of
Time Slices
Eight-time-slice mode
Static display mode
Two-time-slice mode
Three-time-slice mode
Four-time-slice mode
<9> Set (SCOC = 1) the SCOC bit (bit 6 of the LCDM register).
<10> Start output corresponding to each data memory by setting (LCDON = 1) the LCDON bit (bit 7 of the LCDM
Caution When stopping the operation of the capacitor split circuit, be sure to set SCOC and LCDON to 0
Common signals
Each common signal is selected sequentially according to a specified number of time slices at the timing listed in
Table 16-3. In the static display mode, the same signal is output to COM0 to COM3.
In the two-time-slice mode, leave the COM2 and COM3 pins open. In the three-time-slice mode, leave the COM3
pin open.
Use the COM4 to COM7 pins other than in the eight-time-slice mode as open or segment pins.
Note
COM Signal
Non-selected waveforms are output from all the segment and common pins, and the non-display status is
entered.
register).
Use the pins as open or segment pins.
before setting VLCON to 0.
LCD
.
COM0
COM1
Table 16-3. COM Signals
Open
COM2
Open
Open
COM3
LCD
CHAPTER 16 LCD CONTROLLER/DRIVER
). The pixels turn off when the potential difference
COM4
Note
Note
Note
Note
COM5
Note
Note
Note
Note
COM6
Note
Note
Note
Note
COM7
Note
Note
Note
Note
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