UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 111

• Manufacturer Part Number: UPD78F1144AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1144AGB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4.2.4 Port 3
using port mode register 3 (PM3). When the P30 and P31 pins are used as an input port, use of an on-chip pull-up
resistor can be specified in 1-bit units by pull-up resistor option register 3 (PU3).
output.
Port 3 is a 2-bit I/O port with an output latch. Port 3 can be set to the input mode or output mode in 1-bit units
This port can also be used for external interrupt request input, timer I/O, and real-time counter correction clock
Reset signal generation sets port 3 to input mode.
Figure 4-13 shows block a diagram of port 3.
Cautions 1. To use P31/TI03/TO03/INTP4 as a general-purpose port, set bit 3 (TO03) of timer output
WR
WR
WR
P3:
PU3:
PM3:
RD:
WR××: Write signal
RD
PORT
PM
PU
2. To use P30/RTC1HZ/INTP3 as a general-purpose port, set bit 5 (RCLOE1) of Real-time counter
register 0 (TO0) and bit 3 (TOE03) of timer output enable register 0 (TOE0) to “0”, which is the
same as their default status setting.
control register 0 (RTCC0) to “0”, which is the same as their default status setting.
Read signal
Port register 3
Pull-up resistor option register 3
Port mode register 3
PM30, PM31
PU30, PU31
Output latch
(P30, P31)
Alternate
Alternate
function
function
PM3
PU3
P3
Figure 4-13. Block Diagram of P30 and P31
CHAPTER 4 PORT FUNCTIONS
User’s Manual U17854EJ9V0UD
EV
DD
P-ch
P30/RTC1HZ/INTP3,
P31/TI03/TO03/INTP4
109