psd835g2 STMicroelectronics, psd835g2 Datasheet - Page 111

• Manufacturer Part Number: psd835g2
• Description: Configurable Memory System On A Chip For 8-bit Microcontrollers
• Manufacturer: STMicroelectronics

PSD835G2
Figure 45. Peripheral I/O Read timing
Table 43.
1. Any input used to select port F Data Peripheral mode.
2. RD has the same timing as DS and PSEN.
3. Data is already stable on port F.
t
t
t
t
t
t
t
AVQV–PF
SLQV–PF
RLQV–PF
DVQV–PF
QXRH–PF
RLRH–PF
RHQZ–PF
Symbol
A /D BUS
ALE/AS
Port F Peripheral Data mode Read timing
CSI
RD
Address valid to data
valid
CSI Valid to Data Valid
RD to data valid
RD to data valid 8031 mode
Data In to data out valid
RD data hold time
RD pulse width
RD to data high-Z
Parameter
ADDRESS
t AVQV ( PF)
t SLQV (PF)
Conditions
t RLQV (PF)
t RLRH ( PF)
(2)(3)
(1)
(2)
(2)
DATA ON PORT F
Min
27
0
t DVQV ( PF)
-70
DATA VALID
Max
30
25
21
31
22
23
Min
32
0
DC and AC parameters
-90
t QXRH ( PF)
t RHQZ (PF)
Max
35
35
32
38
30
25
Turbo
+ 12
+ 12
Off
AI02897b
111/120
Unit
ns
ns
ns
ns
ns
ns
ns
ns