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PDF TE7753 Data sheet ( Hoja de datos )
| Número de pieza | TE7753 | |
| Descripción | (TE7753 / TE7754) Super I/O Expander | |
| Fabricantes | Tokyo | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TE7753 (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
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TEL Original Products
TE7753/TE7754
DATA SHEET
TE7753/TE7754
www.DataSheet4U.com
SUPER I/O EXPANDER
[Outline]
TE7753 and TE7754 are peripheral devices connected to a microprocessor, or general-purpose interface
devices each having nine 8-bit parallel data input/output ports.
Two port I/O setting modes, soft mode and hard mode, can be selected. Switching the modes eases the
connection to an 86-series or 68-series CPU.
[Characteristics]
1. Equipped with nine 8-bit parallel I/O ports
2. Allowing I/O setting in bit units (port 8 only)
3. Interface designed for connections with various types of CPUs
4. High drive current (IOL = 12 mA: Port 9 only)
5. Choice of two modes
Soft mode : I/O setting is enabled for nine ports by software instructions from the CPU.
Hard mode : I/O setting is enabled for six ports by hardware setting of pins IOS2 to IOS0.
6. Space merit (body size 14 mm x 14 mm)
7. State of ports after resetting
Soft mode : All ports are in input state.
Hard mode : TE7753: Output ports are in High state.
TE7754: Output ports are in Low state.
8. CMOS, 5 V (single supply voltage)
Rev.1.00
TOKYO ELECTRON DEVICE LIMITED
1
1 page  
TEL Original Products
TE7753/TE7754
[Description of Pins]
Pin name
VDD
No.
1,25,
51,75
VSS 26,50,
76,
100
D7-0
53-60
www.DataSheet4U.com
A3-0
65-68
#RESET
61
#CS 62
#RD
63
#WR
64
MS 72
IOS2-0
69-71
I/O Pin function
POWER SUPPLY
-
GROUND
-
Description
Connect all pints to the power supply.
Connect all pins to the ground.
DATA BUS
8-bit bidirectional pins used for data
B communication with the CPU. The #CS, #RD,
and #WR signals control the opening and
closing the bus signal and data direction.
ADDRESS INPUT For communication with the CPU, this signal
I is used to select nine ports and four command
registers.
RESET
Initialization pulse input pin. Initialization is
I performed when a level-0 signal is input.
CMOS Schmitt trigger input
CHIP SELECT
When a level-0 signal is input to this pin, the
I data bus is released so that data
communication can be performed with the
CPU.
READ/READ WRITE When a level-0 signal is input while MS is 0,
SELECT
data is read from each port.
When MS is 1, #RD is used in combination
I
with the #WR signal. When a level-1 signal is
input, data is read. When a level-0 signal is
input, data is written.
WRITE/M ENABLE When a level-0 signal is input while MS is 0,
data is written to command register of each
I port.
When MS is 1, this signal becomes an R#W
signal enable signal.
MODE SELECT
This signal is used to select the mode of
I interfacing with the connected CPU.
For more information, refer to “CPU Interface. ”
INPUT OUTPUT
In soft mode, set all pins to input of 0.
SELECT
In hard mode, these three input pins can be
I used to select input/output combinations of
each port.
For more information, refer to 1, “Soft mode
and hard mode,” of “Description of Operation.”
Rev.1.00
TOKYO ELECTRON DEVICE LIMITED
5
5 Page 
TEL Original Products
TE7753/TE7754
[Hard mode]
Use IOS2 to IOS0 in advance to set ports 2 to 7 for input or output.
However, set only port 8 in the same way as in soft mode; write an 8-bit command to CR0 to set each bit for
input or output.
IOS2, IOS1, IOS0 → Setting other than all 0
Port No
1
www.DataSheet4U.com 2
3
4
5
6
7
8
9
CR used
Always input
IOS2
IOS1
IOS0
CR0
Always output
Nibble input/output
NG
NG
NG
NG
NG
NG
NG
OK
NG
Bit input/output
NG
NG
NG
NG
NG
NG
NG
OK
NG
In hard mode, each port is set for input or output by IOS2, IOS1, and IOS0.
IOS0
0
0
0
1
1
1
1
0
IOS1
0
1
1
0
0
1
1
0
IOS2
1
0
1
0
1
0
1
0
PORT1
I
I
I
I
I
I
I
PORT2
O
I
I
I
I
I
I
PORT3
O
O
I
I
I
I
I
PORT4 PORT5
OO
OO
OO
IO
II
II
II
Soft mode
PORT6
O
O
O
O
O
I
I
PORT7
O
O
O
O
O
O
I
PORT9
O
O
O
O
O
O
O
Rev.1.00
TOKYO ELECTRON DEVICE LIMITED
11
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet TE7753.PDF ] | |
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