Z86C34 datasheet(5/70 Pages) ZILOG

Part #	Z86C34

Description	CMOS Z8 MCUs WITH ASCI UART OFFER EFFICIENT, COST-EFFECTIVE DESIGN FLEXIBILITY

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Manufacturer	ZILOG [Zilog, Inc.]

Direct Link	http://www.zilog.com

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Z86C34/C35/C36/C44/C45/C46

ZiLOG

CMOS Z8® MCUs with ASCI UART

DS007601-Z8X0499

P R E L I M I N A R Y

5

Figure 5. 44-Pin PLCC Pin Conﬁguration

Z86C44/C45/C46

7

17

P21

P22

P23

P24

DS

NC

R/W

P25

P26

P27

P04

P30

P36

P37

P35

RESET

R/RL

AS

P34

P33

P32

P31

1

28

18

40

39

29

6

Table 3. 44-Pin PLCC Pin Identiﬁcation

Pin #

Symbol

Function

Direction

1–2

GND

Ground

3–4

P12–13

Port 1, Bits 2,3

In/Output

5

P03

Port 0, Bit 3

In/Output

6–10

P20–24

Port 2, Bits 0,1,2,3,4

In/Output

11

DS

Data Strobe

Output

12

NC

Not Connected

13

R/W

READ/WRITE

Output

14–16

P25–27

Port 2, Bits 5,6,7

In/Output

17–19

P04–06

Port 0, Bits 4,5,6

In/Output

20–21

P14–15

Port 1, Bits 4,5

In/Output

22

P07

Port 0, Bit 7

In/Output

23–24

VCC

Power Supply

25–26

P16–17

Port 1, Bits 6,7

In/Output

27

XTAL2

Crystal Oscillator

Output

28

XTAL1

Crystal Oscillator

Input

29–31

P31–33

Port 3, Bits 1,2,3

Input

32

P34

Port 3, Bit 4

Output

33

AS

Address Strobe

Output

34

R/RL

ROM/ROMless Control Input

35

RESET

Reset

Input

36

P35

Port 3, Bit 5

Output

37

P37

Port 3, Bit 7

Output

38

P36

Port 3, Bit 6

Output

39

P30

Port 3, Bit 0

Input

40–41

P00–01

Port 0, Bits 0,1

In/Output

42–43

P10–11

Port 1, Bits 0,1

In/Output

44

P02

Port 0, Bit 2

In/Output

Table 3. 44-Pin PLCC Pin Identiﬁcation

Pin #

Symbol

Function

Direction

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