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MFG:NEC  Package Cooled:SOP24L  D/C:0340+  

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Part Number: UPD4701A

 

MFG: NEC

Package Cooled: SOP24L

D/C: 0340+

Description: The PD4701A is a counter for an X, Y 2-axis incremental encoder. When a two-phase encoder signal is inputfor the X and...


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UPD4701A General Description


The PD4701A is a counter for an X, Y 2-axis incremental encoder. When a two-phase encoder signal is inputfor the X and Y axes, direction discrimination and computation is performed, and count data is output in 8-bit parallelform. In addition, a 3-contact-point input buffer is incorporated, which is useful for applications which use a pointingdevicesuch as a mouse or track-ball. The CPU checks the switch input flag or count flag and reads the 12-bit countdata in twooperations, one for the lower byte and one for the upper byte. The key input flag is output together withthe count data in the upper byte.

UPD4701A Maximum Ratings

PARAMETER
SYMBOL
RATING
UNIT
Supply voltage
VDD
0.5 to +7.0
V
nput voltage
VI
1.0 to VDD +1.0
V
Output voltage
VO
0.5 to VDD +0.5
V
Operating temperature
Operating temperature
40 to +85
°C
Storage temperature
Tstg
65 to +150
°C
Permissible loss
PD
500
mW

UPD4701A Features

 X, Y 2-axis incremental encoder counter
Counter input (Schmitt-triggered input)

  Counters:  12-bit binary up/down counters (2 sets, X & Y)Reset value:  000H
  Count data output:  8-bit parallel latch output * 2 (including key input flag)
  On-chip 3-contact-point key input buffer circuit
CMOS
Single +5 V power supply

UPD4701A Connection Diagram

UPD4701A  Connection Diagram

UPD4701A datasheet

UPD4701A
PDF/DataSheet Download

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