st10f272z2 STMicroelectronics, st10f272z2 Datasheet - Page 169

• Manufacturer Part Number: st10f272z2
• Description: 16-bit Mcu With 256 Kbyte Flash Memory And 20 Kbyte Ram
• Manufacturer: STMicroelectronics

ST10F272Z2
Figure 54. External memory cycle: multiplexed bus, with/without read/write delay, extended ALE
ALE
CSx
A23-A16
(A15-A8)
BHE
Read cycle
Address/Data
Bus (P0)
RD
Write cycle
WR
WRL
WRH
Address/Data
Bus (P0)
t
t
6
6
t
6
t
5
Address
t
38
Address
t
9
t
9
t
17
t
17
t
7
t
t
8
8
Address
t
39
t
16
t
t
11
11
t
13
t
t
t
t
10
15
13
10
t
t
14
12
t
12
t
22
Data out
Data in
t
18
Electrical characteristics
t
t
27
23
t
t
27
19
t
25
t
40
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