PSD835G2 Datasheet, PDF (90/110 Pages) STMicroelectronics – Configurable Memory System on a Chip for 8-Bit Microcontrollers

PSD835G2
Microcontroller
Interface –
PSD835G2
AC/DC
Parameters
(3.0 V to 3.6 V
Versions)
PSD8XX Family
AC Symbols for PLD Timing.
Example: t _AVLX – Time from Address Valid to ALE Invalid.
Signal Letters
A – Address Input
C – CEout Output
D – Input Data
E – E Input
G – Internal WDOG_ON signal
I – Interrupt Input
L – ALE Input
N – Reset Input or Output
P – Port Signal Output
Q – Output Data
R – WR, UDS, LDS, DS, IORD, PSEN Inputs
S – Chip Select Input
T – R/W Input
W – Internal PDN Signal
B – Vstby Output
M – Output Micro⇔Cell
Signal Behavior
t – Time
L – Logic Level Low or ALE
H – Logic Level High
V – Valid
X – No Longer a Valid Logic Level
Z – Float
PW – Pulse Width
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