Z80PIO

Z80-PIO

PDF datasheet

    
D21 •40D5
D7239D4
D6338D3
CE437M1
C/D536IORQ
B/A635RD
PA7734PB7
PA6833PB6
PA5932PB5
PA41031PB4
GND1130PB3
PA31229PB2
PA21328PB1
PA11427PB0
PA01526+5V
ASTB1625CLK
BSTB1724IEI
ARDY1823INT
D01922IEO
D12021BRDY
    
PinSymbolDescription
1D2Data Line 2 To CPU (Bi-Directional)
2D7Data Line 7 To CPU (Bi-Directional)
3D6Data Line 6 To CPU (Bi-Directional)
4CEChip Enable Input (Active Low)
5C/DControl/Data Select (High = Ctrl, Low = Data)
6B/APort A or B Select (Low = A, High = B)
7PA7Peripheral Port A Line 7 (Bi-Directional)
8PA6Peripheral Port A Line 6 (Bi-Directional)
9PA5Peripheral Port A Line 5 (Bi-Directional)
10PA4Peripheral Port A Line 4 (Bi-Directional)
11GNDPower Ground
12PA3Peripheral Port A Line 3 (Bi-Directional)
13PA2Peripheral Port A Line 2 (Bi-Directional)
14PA1Peripheral Port A Line 1 (Bi-Directional)
15PA0Peripheral Port A Line 0 (Bi-Directional)
16ASTBPort A Strobe Input from Peripheral (Active Low)
17BSTBPort B Strobe Input from Peripherial (Active Low)
18ARDYRegister A Ready Output (Active High)
19D0Data Line 0 To CPU (Bi-Directional)
20D1Data Line 1 To CPU (Bi-Directional)
21BRDYRegister B Ready Output (Active High)
22IEOInterrupt Enable Output (Active High)
23INTInterrupt Input (Active Low)
24IEIInterrupt Enable Input (Active High)
25CLKSystem Clock Input
26+5VPower 5V DC
27PB0Peripheral Port A Line 0 (Bi-Directional)
28PB1Peripheral Port A Line 1 (Bi-Directional)
29PB2Peripheral Port A Line 2 (Bi-Directional)
30PB3Peripheral Port A Line 3 (Bi-Directional)
31PB4Peripheral Port A Line 4 (Bi-Directional)
32PB5Peripheral Port A Line 5 (Bi-Directional)
33PB6Peripheral Port A Line 6 (Bi-Directional)
34PB7Peripheral Port A Line 7 (Bi-Directional)
35RDRead Request Input from CPU (Active Low)
36IORQInput/Output Request Input from CPU (Active Low)
37M1Machine Cycle 1 Input from CPU (Active Low)
38D3Data Line 3 To CPU (Bi-Directional)
39D4Data Line 4 To CPU (Bi-Directional)
40D5Data Line 5 To CPU (Bi-Directional)

Specifications

(typical values under recommended operating conditions, unless specified)
ParameterValueUnit
Maximum Voltage Vcc7.0VDC
Maximum Input VoltageVcc + 0.3VDC
Storage Temperature-65 to +150Degrees C

Notes

Note: Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information.