ML610Q428-NNNTBZ03A7 Rohm Semiconductor, ML610Q428-NNNTBZ03A7 Datasheet - Page 272

• Manufacturer Part Number: ML610Q428-NNNTBZ03A7
• Description: MCU 8BIT 48K FLASH 128-TQFP
• Manufacturer: Rohm Semiconductor

Specifications of ML610Q428-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: 48KB (24K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

20.3 Description of Operation
20.3.1
20.3.2
For each pin of Port 4, either output or input is selected by setting the Port 4 direction register (P4DIR).
In output mode, high-impedance output mode, P-channel open drain output mode, N-channel open drain output mode,
or CMOS output mode can be selected by setting the Port 4 control registers 0 and 1 (P4CON0 and P4CON1).
In input mode, high-impedance input mode, input mode with a pull-down resistor, or input mode with a pull-up resistor
can be selected by setting the Port 4 control registers 0 and 1 (P4CON0 and P4CON1).
At a system reset, high-impedance output mode is selected as the initial state.
In output mode, “L” or “H” level is output to each pin of Port 4 depending on the value set by the Port 4 data register
(P4D).
In input mode, the input level of each pin of Port 4 can be read from the Port 4 data register (P4D).
Secondary and tertiary functions are assigned to Port 4 as the I2C bus 0 pins (SDA, SCL), UART 0 pins (RXD0,
TXD0), RC-ADC (channel 1) oscillation pins (IN1, CS1, RS1, RT1), synchronous serial port 0 pins (SIN0, SCK0,
SOUT), PWM0 output pin (PWM0), and the PWM1 output pin (PWM1). These pins can be used in a secondary or
tertiary function mode by setting the P47MD0 to P40MD0 bits and the P47MD1 to P40MD1 bits of the Port 4 mode
registers (P4MOD0, P4MOD1).
Note:
The P44 to P47 pins of port 4 are configured as pins dedicated to the RC-ADC function during A/D conversion.
Therefore, if there is any unused pin, that pin cannot be used during A/D conversion. For the RC-ADC, see Chapter
23, “RC Oscillation Type A/D Converter”.
Input/Output Port Functions
Secondary and Tertiary Functions
20 – 11
ML610Q428/ML610Q429 User’s Manual
Chapter 20 Port 4