ML610Q422-NNNTBZ03A7 Rohm Semiconductor, ML610Q422-NNNTBZ03A7 Datasheet - Page 336

• Manufacturer Part Number: ML610Q422-NNNTBZ03A7
• Description: MCU 8BIT 32K FLASH 22CH 120-TQFP
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of ML610Q422-NNNTBZ03A7

• Core Processor: nX-U8/100
• Core Size: 8-Bit
• Speed: 4.2MHz
• Connectivity: I²C, SSP, UART/USART
• Peripherals: LCD, Melody Driver, POR, PWM, WDT
• Number Of I /o: 14
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.1 V ~ 3.6 V
• Data Converters: A/D 2x12b, 2x24b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 100-TFQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

26.1.3
The bias generation circuit generates LCD drive voltages (V
voltage regulator with the capacitors (C12 and C34).
When the BSON bit of the bias circuit control register (BIASCON) is set to “1”, the bias generation circuit starts operation.
Display contrast adjustment is possible in 32 steps by using the display contrast register (DSPCNT).
Figure 26-5 shows the configurations of the bias generation circuit with 1/3 bias and with 1/4 bias.
Note:
When using 1/3 bias, connect the V
Configuration of the Bias Generation Circuit
Cd
Cb
Ca
Cd
Cb
Ca
C
C
Cc
C
C
34
12
34
12
Figure 26-5 Configuration of Bias Generation Circuit
L2
pin and the V
V
V
V
V
V
C4
C3
C2
C1
C4
C3
C2
C1
V
V
V
V
V
V
V
DD
L4
L3
L2
L1
SS
DD
SS
L4
L3
L2
L1
L3
pin externally.
Regulated power
Regulated power
supply circuit
supply circuit
(1) 1/3 Bias
(2) 1/4 Bias
multiplier
multiplier
Voltage
Voltage
26 – 5
L1
to V
L4)
by multiplying the voltage (VL1) generated by the
ML610Q421/ML610Q422 User’s Manual
Display contrast adjustment
(LCN4 to LCN0)
Selection of bias circuit On
(BSON)
Selection of 1/3 bias
(BSEL)
To LCD drivers
(V
Display contrast adjustment
(LCN4 to LCN0)
Selection of bias circuit On
(BSON)
Selection of 1/4 bias
(BSEL)
To LCD drivers
(V
L1
L1
to V
to V
L4
L4)
)
Chapter 26 LCD Drivers