st10f272z2 STMicroelectronics, st10f272z2 Datasheet - Page 174

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

Electrical characteristics
Figure 57. External memory cycle: Demultiplexed bus, with/without r/w delay, normal ALE
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Data bus (P0)
(D15-D8) D7-D0
(D15-D8) D7-D0
CLKOUT
ALE
CSx
A23-A16
A15-A0 (P1)
BHE
Read cycle
Data bus (P0)
RD
Write cycle
WR
WRL
WRH
t
5
t
6
t
t
81
81
t
6
t
t
t
38
80
80
t
t
17
17
Address
t
t
9
39
t
13
t
15
t
14
t
13
t
t
12
12
t
22
Data out
Data in
t
24
t
t
t
t
18
41
41u
26
t
21
t
28
t
20
(or t
28h
)
ST10F272Z2