3
12
Decoder (10+2 - Corresponds to HT6010/HT6012)
3
12
Decoder (10+2 - Corresponds to
HT6010/HT6012)
D/N: HA0064E
Introduction
This application shows how to use the HT48R50A-1 to simulate the HT6032 3
12
decoder
function to decode the 10 Address bits and 2 Data bits for the HT6010/HT6012.
Function and Theory
The 3 Decoder function can decode the 10 Address bits and 2 Data bits each of which
can be set individually to either
″1″
and
″0″.
MCU: HT48R50A-1
Method: uses the HT6032 decoding process (see the HT6032 datasheet) to check the
corresponding signal width to judge if the signal is either a
″0″, ″1″
or
″floating″.
The
corresponding width can decode skewed signals, the tolerance of which can be adjusted
by MAXDURATION in the program.
Pin Function:
PB0~PB7: Address input pins
PC0~PC1: Address input pins
PD2~PD3: Data output pins
PA5: Serial data input pin
PD4: Valid transmission pin
1
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HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
