UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 145

• 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

6.2.4 Port 3 ( PD780024A, 780034A Subseries)
with port mode register 3 (PM3).
3-bit/lower 4-bit, and whether the product is a mask ROM version or a flash memory version.
Port 3 is a 7-bit I/O port with output latch. P30 to P36 pins can specify the input mode/output mode in 1-bit units
This port has the following functions for pull-up resistors. These functions differ depending on the port’s higher
The P30 to P33 pins can drive LEDs directly.
The P34 to P36 pins can also be used for serial interface data I/O and clock I/O.
RESET input sets port 3 to input mode.
Figures 6-7 to 6-11 show block diagrams of port 3.
Mask ROM version
Flash memory version
PU3: Pull-up resistor option register 3
PM: Port mode register
RD: Port 3 read signal
WR: Port 3 write signal
WR
WR
RD
PORT
PM
Figure 6-7. Block Diagram of P30 and P31 ( PD780024A, 780034A Subseries)
Table 6-4. Pull-Up Resistor of Port 3 ( PD780024A, 780034A Subseries)
Output latch
(P30, P31)
PM30, PM31
An on-chip pull-up resistor can be
connected in 1-bit units by PU3
Higher 3-Bit (P34 to P36 Pins)
CHAPTER 6 PORT FUNCTIONS
User’s Manual U14046EJ5V0UD
An on-chip pull-up resistor can be specified
in 1-bit units by mask option
On-chip pull-up resistor is not provided
Lower 4-Bit (P30 to P33 Pins)
N-ch
V
DD0
Mask option resistor
Mask ROM version only
No pull-up resistor for
flash memory version
P30, P31
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