st10f273m STMicroelectronics, st10f273m Datasheet - Page 167

• Manufacturer Part Number: st10f273m
• Description: 16-bit Mcu With 512 Kbyte Flash Memory And 36 Kbyte Ram
• Manufacturer: STMicroelectronics

ST10F273M
Figure 56. External memory cycle: Demultiplexed bus, with/without r/w delay, extended ALE
(D15-D8) D7-D0
Data bus (P0)
(D15-D8) D7-D0
Data bus (P0)
A23-A16
A15-A0 (P1)
BHE
CLKOUT
ALE
CSx
Read cycle
RD
Write cycle
WR
WRL
WRH
t
t
6
5
t
6
t
38
t
t
81
81
t
80
t
80
Address
t
17
t
17
t
39
t
16
t
t
13
13
t
t
15
14
t
t
12
12
t
Data out
22
Data in
t
28
t
24
Electrical characteristics
t
18
t
28
t
t
26
41
t
21
t
20
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