psd4235g2 STMicroelectronics, psd4235g2 Datasheet - Page 116

• Manufacturer Part Number: psd4235g2
• Description: Flash In-system Programmable Isp Peripherals For 16-bit Mcus 5v Supply
• Manufacturer: STMicroelectronics

DC and AC parameters
Table 66.
1. Programmed to all zero before erase.
2. The polling status, DQ7, is valid tQ7VQV time units before the data byte, DQ0-DQ7, is valid for reading.
3. DQ7 is DQ15 for Motorola MCU with 16-bit data bus.
Figure 43. Peripheral I/O write timing
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t
t
t
t
t
WHQV3
WHQV2
WHQV1
WHWLO
Q7VQV
Symbol
A / D BUS
ALE/AS
Program, WRITE and Erase times
Flash Program
Flash Bulk Erase
Flash Bulk Erase (not pre-programmed)
Sector Erase (pre-programmed)
Sector Erase (not pre-programmed)
Byte Program
Program / Erase Cycles (per Sector)
Sector Erase timeout
DQ7 Valid to output (DQ7-DQ0) Valid (Data
Polling)
WR
(2)(3)
(1)
(pre-programmed)
ADDRESS
Parameter
tWLQV
(PF)
100,000
Min.
tDVQV (PF)
DATA OUT
DATA OUT
PORT F
Typ.
100
8.5
2.2
10
14
3
1
tWHQZ (PF)
Max.
1200
30
30
30
PSD4235G2
AI05741
cycles
Unit
µs
µs
ns
s
s
s
s
s