9
Plasma TV Service Manual
14/03/2005
20
TP1 (I)
Test point 1
21-27
X0-X6 (IPU)
Sense inputs from key matrix
28
VDD(I)
Voltage supply
Note:
(I): Input,
(IPU): input with p-channel pull-up transistor,
(ODN): output with open drain n-channel transistor
(OD3): output 3-state
12.6.
24C32A
12.6.1. Features
Voltage operating range: 4.5V to 5.5V
- Maximum write current 3 mA at 5.5V
- Standby current 1 mA typical at 5.0V
2-wire serial interface bus, I
2
C
TM
compatible
100 kHz and 400 kHz compatibility
Self-timed ERASE and WRITE cycles
Power on/off data protection circuitry
Hardware write protect
1,000,000 Erase/Write cycles guaranteed
32-byte page or byte write modes available
Schmitt trigger filtered inputs for noise suppression
Output slope control to eliminate ground bounce
2 ms typical write cycle time, byte or page
Up to eight devices may be connected to the same bus for up to 256K bits total memory
Electrostatic discharge protection > 4000V
Data retention > 200 years
8-pin PDIP and SOIC packages
Temperature ranges
- Commercial (C): 0°C to 70°C
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
12.6.2. Description
The Microchip Technology Inc. 24C32A is a 4K x 8 (32K bit) Serial Electrically Erasable PROM. It has
been developed for advanced, low power applications such as personal communications or data
acquisition. The 24C32A also has a page-write capability of up to 32 bytes of data. The 24C32A is
capable of both random and sequential reads up to the 32K boundary. Functional address lines allow
up to eight 24C32A devices on the same bus, for up to 256K bits address space. Advanced CMOS
technology and broad voltage range make this device ideal for low-power/low-voltage, non-volatile code
and data applications. The 24C32A is available in the standard 8-pin plastic DIP and both 150 mil and
200 mil SOIC packaging.
12.6.3. Pin Function table
Name
Function
A0, A1, A2
User Configurable Chip Selects
V
ss
Ground
SDA
Serial Address/Data I/O
SCL
Serial Clock
WP
Write Protect Input
V
cc
+4.5V to 5.5V Power Supply
Summary of Contents for HPT-4205
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Page 56: ...54 Plasma TV Service Manual 14 03 2005 15 CIRCUIT DIAGRAMS...
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