D78054 データシートの表示（PDF） - NEC => Renesas Technology
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D78054 Datasheet PDF : 62 Pages
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µPD78001B(A), 78002B(A)
5 PERIPHERAL HARDWARE FUNCTION FEATURES
5.1 PORTS
The I/O port has the following three types.
• CMOS input (P00, P04)
:2
• CMOS input/output (P01 to P03,
port 1 to port 5, P64 to P67)
: 47
• N-ch open-drain input/output
(15V withstand voltage) (P60 to P63)
:4
Total
: 53
Table 5-1 Functions of Ports
Port Name
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Pin Name
P00, P04
P01 to P03
P10 to P17
P20 to P27
P30 to P37
P40 to P47
P50 to P57
P60 to P63
P64 to P67
Function
Dedicated Input port
Input/output ports. Input/output can be specified bit-wise.
When used as an input port, pull-up resistor can be used by software.
Input/output ports. Input/output can be specified bit-wise.
When used as an input port, pull-up resistor can be used by software.
Input/output ports. Input/output can be specified bit-wise.
When used as an input port, pull-up resistor can be used by software.
Input/output ports. Input/output can be specified bit-wise.
When used as an input port, pull-up resistor can be used by software.
Input/output ports. Input/output can be specified in 8-bit units.
When used as an input port, pull-up resistor can be used by software.
Test input flag (KRIF) is set to 1 by falling edge detection.
Input/output ports. Input/output can be specified bit-wise.
When used as an input port, pull-up resistor can be used by software.
LED can be driven directly.
N-ch open-drain input/output port. Input/output can be specified bit-wise.
On-chip pull-up resistor can be specified by mask option.
LED can be driven directly.
Input/output ports. Input/output can be specified bit-wise.
When used as an input port, pull-up resistor can be used by software.
Caution When pull-up resistors are not used (specified by mask option), low-level input leak current increases
with –200 µA (MAX.) under either of the following conditions.
1 When the external device expansion function is used and a low-level is input to the pin.
2 During the 3-clock period when a read instruction is executed on port 6 (P6) and the port mode
register (PM6).
16
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