SM5K3 datasheet(21/28 Pages) SHARP

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SM5K3/SM5K4/SM5K5

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I/O Ports

The SM5K3/5K4/5K5 have 24 ports : 8-input, 4-

output and 12-I/O port. To verify the input, use

suitable instruction to transfer the input on the pin

directly to the A register. To select the output latch

be transferred, and to select the input port from

which the signal or data is to be transferred to the

A register, use the BL register. For details of BL

settings and associated ports, refer to Table 1.

• Port P00 to P03 (CMOS inverting output port)

The data transfers in 4-bit string (use OUT or

OUTL instruction) or in unit of 1-bit (use ANP or

ORP instruction).

• Port P10 to P13 (input port with pull-up resistor)

The data transfers in unit of 4-bit. This port can be

used as standby/external interrupt input or count

pulse input. The P1 port can also be used as a

standby release port without requiring specific

setting on P12 and P13 pins. Pins P10 and P11

require settings through the mode resister RE.

When using the P1 port as an external interrupt

input, use pins P10 and P11 with suitable settings in

the mode register RE. When using the P1 port as

the count pulse input, use P11 pin.

• Port P20 to P23 (I/O port with pull-up resistor)

Each bit can be independently be set its direction

and can be transferred independently or in

combination of other 3-bit. The direction of the bits

is determined by the RF register. After reset, the

P2 port is set input.

• Port P30 to P33 (input port with pull-up resistor)

The data transfers in unit of 4-bit. The port can also

be used as A/D analog voltage input. To use the P3

port as the A/D port, set the mode register R3.

• Port P40 to P43 (I/O port with pull-up resistor)

The data transfers in unit of 4-bit.

When set output, content of each bit can be set.

Executing the input instruction (IN) sets the P4

ports (P40 to P43) to input; and executing output

instruction (OUT, ANP or ORP) sets the port to

output. After reset, the P4 port is set input.

• Port P50 to P53 (I/O port with pull-up resistor)

The data transfers in unit of 4-bit.

When set output, content of each bit can be set.

Executing the input instruction (IN) sets the P5

ports (P50 to P53) to input; and executing output

instruction (OUT, ANP or ORP) sets the port to

output. After reset, the P5 port is set input.

Flags

The SM5K3/5K4/5K5 have 4 flags (C flag and

interrupt request flags [IFA, IFB, IFT] ), which are

used to perform setting and judgments.

SM5K3 데이터시트(PDF) 21 Page - Sharp Corporation

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