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| EZ80F915050MOD Datasheet, PDF (15/34 Pages) Zilog, Inc. – eZ80F91 Module compact, high-performance Ethernet module | |||
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eZ80F915050MOD
eZ80F91 Module Product Specification
9
Table 3. eZ80F91 Module I/O Connector Pin Identification* (Continued)
Pin # Symbol
Pull
Signal
Up/Down Direction
Comments
5
PA3
Bidirectional
6
PA2
Bidirectional
7
PA1
Bidirectional
8
PA0
Bidirectional
9
VCC
10 GND
11 PB7
Bidirectional
3.3 V supply input pin.
VSS/Ground (0 V).
12 PB6
Bidirectional
13 PB5
Bidirectional
14 PB4
Bidirectional
15 PB3
Bidirectional
16 PB2
Bidirectional
17 PB1
Bidirectional
18 PB0
Bidirectional
19 GND
20 PC7
Bidirectional
VSS/Ground (0 V).
21 PC6
Bidirectional
22 PC5
Bidirectional
23 PC4
Bidirectional
24 PC3
Bidirectional
25 PC2
Bidirectional
26 PC1
Bidirectional
27 PC0
Bidirectional
28 PD7
Bidirectional
29 PD6
Bidirectional
Notes: *External capacitive loads on RD, WR, IORQ, MREQ, D0âD7 and A0âA23 should be below 10 pF to satisfy
timing requirements for the CPU.
All unused inputs should be pulled to either VDD or GND, depending on their inactive levels, to reduce power
consumption and to reduce noise sensitivity.
All inputs are CMOS level 3.3 V (5 V tolerant), except where otherwise noted.
PS019310-0904
PRELIMINARY
Pin Description
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