psd935g2 STMicroelectronics, psd935g2 Datasheet - Page 69

• Manufacturer Part Number: psd935g2
• Description: Configurable Memory System On A Chip For 8-bit Microcontrollers
• Manufacturer: STMicroelectronics

Microcontroller
Interface –
AC/DC
Parameters
(5V ± 10% Versions)
PSD9XX Family
68
AC Symbols for PLD Timing.
Example:
Signal Letters
Signal Behavior
A – Address Input
C – CEout Output
D – Input Data
E – E Input
I – Interrupt Input
L – ALE Input
N – Reset Input or Output
P – Port Signal Output
R – UDS, LDS, DS, RD, PSEN Inputs
S – Chip Select Input
T – R/W Input
W – WR Input
B – Vstby Output
M – Output Micro Cell
t
L
H
V
X
Z
PW – Pulse Width
– Time
– Logic Level Low or ALE
– Logic Level High
– Valid
– No Longer a Valid Logic Level
– Float
t
AVLX
– Time from Address Valid to ALE Invalid.
PSD935G2