参数资料
型号: uPSD3212
厂商: 意法半导体
英文描述: Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可编程系统器件)
中文描述: 闪存可编程系统器件与8032微控制器内核(嵌入高速“8032微控制器核”的闪存型可编程系统器件)
文件页数: 131/155页
文件大小: 1055K
代理商: UPSD3212
131/155
μPSD321X
Figure 65. External Program Memory READ Cycle
Table 91. External Program Memory AC Characteristics (with the 5V MCU Module)
Note: 1. Conditions (in addition to those in Table 86, V
CC
= 4.5 to 5.5V): V
SS
= 0V; C
L
for Port 0, ALE and PSEN output is 100pF; C
L
for
other outputs is 80pF
2. Interfacing the μPSD321X Devices to devices with float times up to 20ns is permissible. This limited bus contention does not cause
any damage to Port 0 drivers.
Symbol
Parameter
1
40MHz Oscillator
Variable Oscillator
1/t
CLCL
= 24 to 40MHz
Unit
Min
Max
Min
Max
t
LHLL
ALE pulse width
35
2t
CLCL
– 15
ns
t
AVLL
Address set-up to ALE
10
t
CLCL
– 15
ns
t
LLAX
Address hold after ALE
10
t
CLCL
– 15
ns
t
LLIV
ALE Low to valid instruction in
55
4t
CLCL
– 45
ns
t
LLPL
ALE to PSEN
10
t
CLCL
– 15
ns
t
PLPH
PSEN pulse width
60
3t
CLCL
– 15
ns
t
PLIV
PSEN to valid instruction in
30
3t
CLCL
– 45
ns
t
PXIX
Input instruction hold after PSEN
0
0
ns
t
PXIZ2
Input instruction float after PSEN
15
t
CLCL
– 10
ns
t
PXAV2
Address valid after PSEN
20
t
CLCL
– 5
ns
t
AVIV
Address to valid instruction in
70
5t
CLCL
– 55
ns
t
AZPL
Address float to PSEN
–5
–5
ns
tAVLL
tPLPH
tPXIZ
tAVIV
PSEN
PORT 2
PORT 0
AI06848
tLHLL
ALE
tLLPL
A0-A7
tLLAX
tAZPL
tLLIV
tPLIV
A0-A7
tPXAV
tPXIX
A8-A11
INSTR
IN
A8-A11
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