UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 122

• 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: -

4.2.9 Port 12
using port mode register 12 (PM12). When used as an input port, use of an on-chip pull-up resistor can be specified
by pull-up resistor option register 12 (PU12).
connecting resonator for main system clock, connecting resonator for subsystem clock, and external clock input for
main system clock.
120
P121 to P124 are 4-bit input ports.
This port can also be used for external interrupt request input, potential input for external low-voltage detection,
Reset signal generation sets port 12 to input mode.
Figures 4-23 to 4-25 show block diagrams of port 12.
Caution The function setting on P121 to P124 is available only once after the reset release. The port once
P120 is a 1-bit I/O port with an output latch. Port 12 can be set to the input mode or output mode in 1-bit units
WR
WR
WR
P12:
PU12:
PM12:
RD:
WR××: Write signal
RD
PORT
PU
PM
set for connection to an oscillator cannot be used as an input port unless the reset is performed.
Port register 12
Pull-up resistor option register 12
Port mode register 12
Read signal
Output latch
Alternate
function
(P120)
PM120
PU120
PM12
PU12
P12
Figure 4-23. Block Diagram of P120
CHAPTER 4 PORT FUNCTIONS
User’s Manual U17854EJ9V0UD
EV
DD
P-ch
P120/INTP0/EXLVI