ST10F271E STMICROELECTRONICS [STMicroelectronics], ST10F271E Datasheet - Page 159

• Manufacturer Part Number: ST10F271E
• Description: 16-bit MCU with 128 Kbyte Flash memory and 8/12 Kbyte RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST10F271B/ST10F271E
Figure 50. External memory cycle: Multiplexed bus, with/without read/write delay, normal ALE
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
t
1
16
39
16
t
15
Address
t
t
10
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
Electrical characteristics
Address
159/180