MC146805E2FN View Datasheet(PDF) - InnovASIC, Inc
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Description
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MC146805E2FN Datasheet PDF : 31 Pages
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IA6805E2
Microprocessor Unit
Data Sheet
As of Production Version 00
Crystal Parameters Representative Frequencies:
RS max
C0
C1
Q
COSC1
COSC2
5.0 MHz 4.0 MHz 1.0 MHz
50Ω
75Ω
400Ω
8 pF
7 pF
5 pF
0.02 pF 0.012 pF 0.008 pF
50 k
40 k
30 k
15-30 pF 15-30 pF 15-40 pF
15-25 pF 15-25 pF 15-30 pF
Oscillator Connections:
38
OSC2
38
OSC2
CRYSTAL CIRCUIT
L
C1
RS
39
C0
OSC1
39
OSC1
CRYSTAL OSCILLATOR CONNECTIONS
ia6805E2
10 MΩ
38
39
OSC2
C OSC2
OSC1
C OSC1
OSC1
39
OSC2
NC
38
IA6805E2
OSC1 PIN
tOL
tOH
t
tOLOL
Figure 3. OSC1, OSC2 (System Clock)
OSC1 to Bus Transitions Timing Waveforms:
OSC1
AS
DS
RW_n
A[12:8]
B[7:0]
MPU READ
MUX ADDR
MPU
READ
DATA*
B[7:0]
MPU WRITE
MUX ADDR
MPU WRITE DATA
*READ DATA "LATCHED" ON DS FALL
Figure 4. OSC1, OSC2 (System Clock)
Copyright © 2002
innovASIC
The End of Obsolescence™
ENG21108140100
Page 5 of 31
www.innovasic.com
Customer Support:
1-888-824-4184
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