SDA5523 Micronas Semiconductor, SDA5523 Datasheet - Page 149
SDA5523
Manufacturer Part Number
SDA5523
Description
SDA55xx TVText Pro
Manufacturer
Micronas Semiconductor
Datasheet
1.SDA5523.pdf
(176 pages)
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DATA SHEET
4.6. Pin Connections and Short Descriptions
NC = not connected, leave vacant
LV = if not used, leave vacant
Micronas
PMQFP
100-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PMQFP
64-1
−
−
−
−
−
3
4
5
57
58
59
60
61
62
64
2
−
−
Pin No.
PSDIP
52-1
52-2
−
−
−
−
−
9
10
11
1
2
3
4
5
6
7
8
−
−
PLCC
84-1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
−
−
Pin Name
D1
D4
D2
D3
XROM
VDD 2.5
VSS2.5
VDD 3.3
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
ENE
STOP
Sept. 10, 2004; 6251-556-3DS
Type
I/O
I/O
I/O
I/O
I/O
PS
PS
PS
PS
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
Connection
(If not used)
Short Description
Data bus for external mem-
ory or data RAM
Data bus for external mem-
ory or data RAM
Data bus for external mem-
ory or data RAM
Data bus for external mem-
ory or data RAM
This pin must be pulled low
to access external ROM
Supply voltage (2.5 V)
Ground (0 V)
Input/Output (3.3 V)
Port 0 is a b-bit open drain
bidirectional I/O port. Port 0
pins that have “1” written to
them float. In this stage,
they can be used as high
impedance inputs (e.g. for
software driven I²C Bus
support).
Enable Emulation. Only if
this pin is set to zero exter-
nally, STOP and OCF are
operational. ENE has an
internal pull-up resistor
which switches auotomati-
cally to non-emulation mode
if ENE is not connected.
Emulation control line. Driv-
ing a low level during the
input phase freezes the real
time relevant internal
peripherals such as timers
and interrupt controller.
SDA 55xx
149
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