UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 155

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

6.2.7 Port 5
bit units with port mode register 5 (PM5). An on-chip pull-up resistor of P50 to P57 pins can be used for them in 1-
bit units with pull-up resistor option register 5 (PU5).
Port 5 is an 8-bit I/O port with output latch. The P50 to P57 pins can specify the input mode/output mode in 1-
Port 5 can drive LEDs directly.
This port can also be used as an address bus in external memory expansion mode.
RESET input sets port 5 to input mode.
Figure 6-18 shows a block diagram of port 5.
Caution
PU: Pull-up resistor option register
PM: Port mode register
RD: Port 5 read signal
WR: Port 5 write signal
P40
P41
P42
P43
P44
P45
P46
P47
WR
The internal pull-up resistor is not disconnected even if the external memory expansion mode
is set when PU5n = 1 (n = 0 to 7).
WR
WR
RD
PORT
PU
PM
Figure 6-17. Block Diagram of Falling Edge Detector
PM50 to PM57
PU50 to PU57
(P50 to P57)
Output latch
Alternate
function
Figure 6-18. Block Diagram of P50 to P57
“1” when MEM = 01H
CHAPTER 6 PORT FUNCTIONS
User’s Manual U14046EJ5V0UD
mode register (MEM)
Memory expansion
Selector
Selector
Falling edge detector
V
DD0
P-ch
INTKR
P57/A15
P50/A8
to
153