Fig. 4-2 Write Timing Of Display Interface; Fig. 4-3 Read Timing Of Display Interface - Siemens M20 Terminal Technical Description

Siemens Information and Communication Products
4.3.3 Display
12 Pins for connection of a dot display (2 lines x 16 columns)
Signal Function
DCS# Chip select
DRS Address (A0)
DE Data enable
D8...D15 Databus
HWR# Write
For detailed information on read and write timing see
. The corresponding timing values can be found in
terface
DRS
t
13
t
15
DCS#
HWR#
D15:8
t
12
DE
Fig. 4-2 Write timing of display interface
DRS
DCS#
HWR#
D15:8
t
12
DE
Fig. 4-3 Read timing of display interface
Version 8 dated 15.03.00
I/O
O
O
O
I/O
O

Fig. 4-2 Write timing of display interface

t
17
t
10
t
21
t
22
t
20
Level Comments
2.8V may be disconnected if unused
2.8V may be disconnected if unused
2.8V may be disconnected if unused
2.8V may be disconnected if unused
2.8V may be disconnected if unused
Timing values of display interface
t
t
16
t
18
t
19
t
11
DATA VALID
t
t
11a
23
Hardware interfaces
and
Read timing of display in-
.
14
A
19