UPD78F1502AGK-GAK-AX Datasheet, PDF (67/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 2 PIN FUNCTIONS
2.2.8 P70 to P77
P70 to P77 function as an I/O port. This port can also be used for key return input, serial interface clock I/O, and data
I/O.
Input to the P75, and P76 pins can be specified through a normal input buffer or a TTL input buffer in 1-bit units using
port input mode register 7 (PIM7).
Output from the P75, and P77 pins can be specified as N-ch open-drain output (VDD tolerance) in 1-bit units using port
output mode register 7 (POM7).
<R>
P70/KR0
P71/KR1
P72/KR2
P73/KR3
P74/KR4
P75/SCK01
P76/KR6/SI01
P77/KR7/SO01
78K0R/LF3
(80 pins: μ PD78F15x0A,
78F1501A, 78F15x2A)
78K0R/LG3
(100 pins: μ PD78F15x3A,
78F1504A, 78F15x5A)
−
−
−
−
−
−
−
−
78K0R/LH3
(128 pins: μ PD78F15x6A,
78F1507A, 78F15x8A)
√
√
√
√
√
√
√
√
The following operation modes can be specified in 1-bit units.
(1) Port mode
P70 to P77 function as an I/O port. P70 to P77 can be set to input or output port in 1-bit units using port mode
register 7 (PM7). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 7 (PU7).
(2) Control mode
P70 to P77 function as key interrupt input, serial interface clock I/O, and data I/O.
(a) KR0 to KR7
These are the key return input pins
(b) SCK01
This is a clock I/O pin of serial interface CSI01.
(c) SI01
This is a serial data input pin of serial interface CSI01.
(d) SO01
This is a serial data output pin of serial interface CSI01.
Caution To use P75/SCK01/KR5, P76/SI01/KR6, and P77/SO01/KR7, as a general-purpose port, note the serial
array unit 0 setting. For details, refer to Table 14-6 Relationship Between Register Settings and Pins
(Channel 1 of unit 0: CSI01, UART0 Reception).
R01UH0004EJ0501 Rev.5.01
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Jun 20, 2011