UPD78F1174AGF-GAT-AX Renesas Electronics America, UPD78F1174AGF-GAT-AX Datasheet - Page 145

• Manufacturer Part Number: UPD78F1174AGF-GAT-AX
• Description: MCU 16BIT 78K0R/KX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1174AGF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, EBI/EMI, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 111
• 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 16x10b; D/A 2x8b
• 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 8
using port mode register 8 (PM8). When the P80 to P87 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 8 (PU8).
expansion I/O function is used, it controls the I/O ignoring the settings on port mode register 8 (PM8), port register 8
(P8), and pull-up resistor option register 8 (PU8).
Port 8 is an 8-bit I/O port with an output latch. Port 8 can be set to the input mode or output mode in 1-bit units
This port can also be used for external expansion I/O (multiplexed address/data bus, data bus). When the external
Reset signal generation sets port 8 to input mode.
Figure 4-31 shows a block diagram of port 8.
P8:
PU8:
PM8:
RD:
WR××: Write signal
EXEN: Bit 7 of memory extension mode control register (MEM)
WR
WR
WR
RD
PORT
Read signal
PU
PM
Port register 8
Pull-up resistor option register 8
Port mode register 8
PM80 to PM87
PU80 to PU87
(P80 to P87)
Output latch
Alternate
Alternate
function
function
PM8
PU8
P8
Figure 4-31. Block Diagram of P80 to P87
CHAPTER 4 PORT FUNCTIONS
User’s Manual U18432EJ5V0UD
EXEN
EV
DD0
, EV
P-ch
DD1
P80/EX0 to
P87/EX7
143