Z84C90 Datasheet, PDF (9/31 Pages) Zilog, Inc. – KIO Serial/Parallel Counter Timer

Pin Types
Z84C90
KIO Serial/Parallel Counter Timer
4
PC1 (SYNCB) 12
PC2 (DTRB) 13
PC3 (RTSB) 14
TxDA 15
TxCA 16
RxCA 17
RxDA 18
PA0 19
PA1 20
PA2 21
V_CC 22
PA3 23
GND 24
PA4 25
PA5 26
PA6 27
PA7 28
PC4 (RTSA) 29
PC5 (DTRA) 30
PC6 (SYNCA) 31
PC7 (WT/RDYA) 32
84-Pin PLCC
74 CLK/TRG₂
73 CLK/TRG₁
72 CLK/TRG₀
71 D7
70 D6
69 D5
68 D4
67 GND
66 V_CC
65 D3
64 D2
63 D1
62 D0
61 V_CC
60 XTAL₁
59 XTAL₀
58 GND
57 CLOCK
56 CLKOUT
55 OSC
54 INT
Figure 2. Z84C90 84-Pin PLCC Configuration
PS011802-0902