UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 156

• 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

6.2.8 Port 6
units with port mode register 6 (PM6). An on-chip pull-up resistor of P64 to P67 pins can be used for them in 1-bit
units with pull-up resistor option register 6 (PU6).
154
Port 6 is a 4-bit I/O port with output latch. The P64 to P67 pins can specify the input mode/output mode in 1-bit
This port can also be used as a control signal output in external memory expansion mode.
RESET input sets port 6 to input mode.
Figures 6-19 and 6-20 show block diagrams of port 6.
Cautions 1. The internal pull-up resistor is not disconnected even if the external memory expansion mode
PU: Pull-up resistor option register
PM: Port mode register
RD: Port 6 read signal
WR: Port 6 write signal
WR
2. When external wait is not used in external memory expansion mode, P66 can be used as an
WR
WR
RD
PORT
is set when PU6n = 1 (n = 4 to 7).
I/O port.
PM
PU
PM64, PM65, PM67
PU64, PU65, PU67
(P64, P65, P67)
Figure 6-19. Block Diagram of P64, P65, and P67
Output latch
Alternate
function
CHAPTER 6 PORT FUNCTIONS
User’s Manual U14046EJ5V0UD
mode register (MEM)
Memory expansion
Selector
Selector
V
DD0
P-ch
P64/RD,
P65/WR,
P67/ASTB