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UPSD3312D Datasheet(PDF) 252 Page - STMicroelectronics

Part # UPSD3312D
Description  fast 8032 MCU with programmable logic
PDF  272 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3312D Datasheet(HTML) 252 Page - STMicroelectronics

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DC and AC parameters
UPSD33xx
252/272
Doc ID 9685 Rev 7
Figure 87.
External PSEN/READ cycle (80-pin device only)
Table 169.
External PSEN or READ cycle AC Characteristics (3 V or 5 V device)
tAVLL
tPLPH
tPXIZ
tAVIV
PSEN
MCU
AD0 - AD7
MCU
A8 - A11
AI07875
tLHLL
ALE
RD
tLLPL
A0-A7
tLLAX
tAZPL
A0-A7
tPXAV
tPXIX
A8-A11
INSTR
IN
A8-A11
Symbol
Parameter
40 MHz oscillator(1)
1.
BUSCON register is configured for 4 PFQCLK.
Variable oscillator
1/tCLCL = 8 to 40 MHz
Unit
Min
Max
Min
Max
tLHLL
ALE pulse width
17
tCLCL – 8
ns
tAVLL
Address setup to ALE
13
tCLCL – 12
ns
tLLAX
Address hold after ALE
7.5
0.5tCLCL – 5
ns
tLLPL
ALE to PSEN or RD
7.5
0.5tCLCL – 5
ns
tPLPH
PSEN or RD pulse width(2)
2.
Refer to Table 170 for “n” and “m” values.
40
ntCLCL – 10
ns
tPXIX
Input instruction/data hold
after PSEN or RD
22
ns
tPHIZ
Input instruction/data float
after PSEN or RD
10.5
0.5tCLCL – 2
ns
tPXAV
Address hold after PSEN or
RD
7.5
0.5tCLCL – 5
ns
tAVIV
Address to valid
instruction/data in(2)
70
mtCLCL – 5
ns
tAZPL
Address float to PSEN or RD
–2
–2
ns



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