st10f272z2 STMicroelectronics, st10f272z2 Datasheet - Page 168

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

Electrical characteristics
Figure 53. External memory cycle: multiplexed bus, with/without read/write delay, normal ALE
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Read cycle
Address/data
bus (P0)
Address/data
bus (P0)
ALE
CSx
A23-A16
(A15-A8)
BHE
RD
Write cycle
WR
WRL
WRH
t
6
t
t
5
t
6
6
Address
Address
t
t
9
9
t
38
t
t
t
8
t
17
17
8
t
7
t
t
t
1
16
t
39
16
t
15
Address
t
10
t
13
t
13
t
14
t
t
12
12
t
22
Data out
Data in
t
1
t
27
t
t
t
27
t
25
19
23
t
40
Address
ST10F272Z2