UPD78F0078GK-9ET-A Renesas Electronics America, UPD78F0078GK-9ET-A Datasheet - Page 46

• Manufacturer Part Number: UPD78F0078GK-9ET-A
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0078GK-9ET-A

• Lead Free Status / Rohs Status: Supplier Unconfirmed

3.2.5 P40 to P47 (Port 4)
bus.
(1) Port mode
(2) Control mode
3.2.6 P50 to P57 (Port 5)
(1) Port mode
(2) Control mode
3.2.7 P64 to P67 (Port 6)
(1) Port mode
(2) Control mode
44
P40 to P47 function as an 8-bit I/O port. Besides serving as an I/O port, they also function as an address/data
The interrupt request flag (KRIF) can be set to 1 by detecting a falling edge.
The following operating modes can be specified.
Caution
P50 to P57 function as an 8-bit I/O port. Besides serving as an I/O port, they also function as an address bus.
Port 5 can drive LEDs directly.
The following operating modes can be specified.
P64 to P67 function as a 4-bit I/O port. Besides serving as an I/O port, they are also used for control in external
memory expansion mode.
The following operating modes can be specified.
(e) T
(f) ASCK2
These pins function as an 8-bit I/O port. They can be specified as input or output in 1-bit units using port mode
register 4 (PM4). On-chip pull-up resistors can be connected by setting pull-up resistor option register 4 (PU4).
These ports function as the lower address/data bus pins (AD0 to AD7) in external memory expansion mode.
These pins function as an 8-bit I/O port. They can be specified as input or output in 1-bit units using port mode
register 5 (PM5). On-chip pull-up resistors can be connected by setting pull-up resistor option register 5 (PU5).
These ports function as the higher address bus pins (A8 to A15) in external memory expansion mode.
These pins function as a 4-bit I/O port. They can be specified as input or output in 1-bit units using port mode
register 6 (PM6).
On-chip pull-up resistors can be connected by setting pull-up resistor option register 6 (PU6).
These pins function as control signal output pins (RD, WR, WAIT, ASTB) in external memory expansion mode.
Caution
Serial data output pin for serial interface UART2.
Serial clock input pin for serial interface UART2.
X
D2
When using the falling edge detection interrupt (INTKR), be sure to set the memory expansion
mode register (MEM) to 01H.
When external wait is not used in external memory expansion mode, P66 can be used as an
I/O port.
CHAPTER 3 PIN FUNCTIONS ( PD780078 SUBSERIES)
User’s Manual U14260EJ4V0UD