UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 139

• 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 Port Configuration
6.2.1 Port 0
with port mode register 0 (PM0). An on-chip pull-up resistor of P00 to P03 pins can be used for them in 1-bit units
with pull-up resistor option register 0 (PU0).
A port consists of the following hardware.
Port 0 is a 4-bit I/O port with output latch. P00 to P03 pins can specify the input mode/output mode in 1-bit units
This port can also be used as an external interrupt request input and A/D converter external trigger input.
RESET input sets port 0 to input mode.
Figure 6-2 shows a block diagram of port 0.
Cautions 1. Port 0 functions alternately as an external interrupt request input pin. If the output mode of
Remark
2. When the external interrupt request function is switched to the port function, edge detection
3. When using P03/INTP3/ADTRG as an A/D converter external trigger input, specify valid edges
n = 0 to 3
the port function is specified and the output level of the port is changed while interrupts are
not disabled by the external interrupt rising edge enable register (EGP) and external interrupt
falling edge enable register (EGN), the interrupt request flag is set. Thus, when the output
mode is used, set the interrupt mask flag to 1.
may be performed. Therefore, clear bit n (EGPn) of EGP and bit n (EGNn) of EGN to 0 before
selecting the port mode.
by setting bits 1 and 2 (EGA00 and EGA01) of A/D converter mode register 0 (ADM0) and set
the interrupt mask flag (PMK3) to 1.
Note Two mask options for the PD780024AY and 780034AY Subseries.
Control register
Port
Pull-up resistor
Item
Port mode register (PMm: m = 0, 2 to 7)
Pull-up resistor option register (PUm: m = 0, 2 to 7)
Total: 51 ports (8 inputs, 43 inputs/outputs)
• Mask ROM version
• Flash memory version Total: 39
CHAPTER 6 PORT FUNCTIONS
Table 6-3. Port Configuration
Total: 43 (software control: 39, mask option: 4
User’s Manual U14046EJ5V0UD
Configuration
Note
)
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