Z86C34 Datasheet, PDF (5/70 Pages) Zilog, Inc. – CMOS Z8 MCUs WITH ASCI UART OFFER EFFICIENT, COST-EFFECTIVE DESIGN FLEXIBILITY

ZiLOG
Z86C34/C35/C36/C44/C45/C46
CMOS Z8® MCUs with ASCI UART
6
1
40
P21 7
39 P30
P22
P36
P23
P37
P24
P35
DS
RESET
NC
Z86C44/C45/C46
R/RL
R/W
AS
P25
P34
P26
P33
P27
P32
P04 17
18
29 P31
28
Figure 5. 44-Pin PLCC Pin Configuration
Table 3. 44-Pin PLCC Pin Identification
Pin #
1–2
3–4
5
6–10
11
12
13
14–16
17–19
20–21
22
23–24
25–26
Symbol
GND
P12–13
P03
P20–24
DS
NC
R/W
P25–27
P04–06
P14–15
P07
V_CC
P16–17
Function
Ground
Port 1, Bits 2,3
Port 0, Bit 3
Port 2, Bits 0,1,2,3,4
Data Strobe
Not Connected
READ/WRITE
Port 2, Bits 5,6,7
Port 0, Bits 4,5,6
Port 1, Bits 4,5
Port 0, Bit 7
Power Supply
Port 1, Bits 6,7
Direction
In/Output
In/Output
In/Output
Output
Output
In/Output
In/Output
In/Output
In/Output
In/Output
Table 3. 44-Pin PLCC Pin Identification
Pin #
27
28
29–31
32
33
34
35
36
37
38
39
40–41
42–43
44
Symbol
XTAL2
XTAL1
P31–33
P34
AS
R/RL
RESET
P35
P37
P36
P30
P00–01
P10–11
P02
Function
Direction
Crystal Oscillator
Output
Crystal Oscillator
Input
Port 3, Bits 1,2,3
Input
Port 3, Bit 4
Output
Address Strobe
Output
ROM/ROMless Control Input
Reset
Input
Port 3, Bit 5
Output
Port 3, Bit 7
Output
Port 3, Bit 6
Output
Port 3, Bit 0
Input
Port 0, Bits 0,1
In/Output
Port 1, Bits 0,1
In/Output
Port 0, Bit 2
In/Output
DS007601-Z8X0499
PRELIMINARY
5