PSD303B-70M STMicroelectronics, PSD303B-70M Datasheet - Page 58

• Manufacturer Part Number: PSD303B-70M
• Description: MCU 8BIT PROGRM 70NS 44-PQFP
• Manufacturer: STMicroelectronics

Specifications of PSD303B-70M

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 44-MQFP, 44-PQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 31. Timing of 8-Bit Non-Multiplexed Address/Data Bus Using R/W, E or R/W, DS
RD/E/DS as DS
RD/E/DS as E
RD/E/DS as E
RD/E/DS as E
RD/E/DS as E
Multiplexed
PAD Input
R/W as R/W
See referenced notes on page 64.
Active High
WR/V
Active Low
as A0-A15
A15/AD15
Inputs
PB0-PB7
as I/O Pin
PA0-PA7
Direct
A0/AD0-
CSI/A19
as CSI
Any of
PP
ALE
ALE
(1)
(2)
or
(PSD3X2/3X3)
1
2
3
35
STABLE INPUT
STABLE INPUT
7
6
33
5
6
READ CYCLE
4
18
12
8
INPUT
DATA VALID
9
32
32
10
19
13
34
1
2
STABLE INPUT
STABLE INPUT
36
14
WRITE CYCLE
3
15
35
14
33
32
32
16
12
17
13
34
20
DATA
PSD3XX Family
IN
OUTPUT
55