Mfr Part #:

UPD72001G-A8-22

Mfr Name: NEC

The NEC UPD72001G-A8-22 is a Multi-Protocol Serial Controller. It offers programmable DMA request outputs and flexible pin functions for various communication needs.

✓ Total Stock: 785 pcs

$ Price Range: $1.94

UPD72001G-A8-22 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Rayichip ✓ Non-Authorised Inventory information	785 pcs On Request	785 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

UPD72001G-A8-22 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	NEC
Storage Temperature	°C ~ °C
Tape & Reel	No

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UPD72001G-A8-22 Description

Short technical summary and product information.

The NEC UPD72001G-A8-22 is a Multi-Protocol Serial Controller designed for versatile communication applications. This component features programmable DMA request outputs for both transmitter and receiver channels (TXA, RXA, TXB, RXB), facilitating efficient data transfer.

It includes advanced interrupt control mechanisms, with PRI and PRO pins managing interrupt generation and daisy-chain configurations. The DTRA/DRQTXB and DTRB/DRQRXB pins offer flexible functionality, acting as either Data Terminal Ready outputs for modem control or as additional DMA request lines depending on configuration.

This controller is suitable for systems requiring robust serial communication capabilities, integrating multiple serial protocols and DMA support. Its design allows for customization through various control register settings to meet specific application requirements.

UPD72001G-A8-22 Quick Information

Product Type: Multi-Protocol Serial Controller

Canonical Name: UPD72001G-A8-22 Multi-Protocol Serial Controller

Subcategory: Special Purpose

UPD72001G-A8-22 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

UPD72001G-A8-22 Estimated Pricing

Qty	Low	High
1+	$1.94	$1.94

Estimated market price range - modelled values for guidance only, not live distributor offers.

UPD72001G-A8-22 Features

Controls interrupt generation in non-vector mode
Active-low PRO output for daisy chain configuration
Active-high DMA request outputs for channels A and B
Multiple function modes based on control bits
Designed for special purpose control applications

UPD72001G-A8-22 Applications

Ideal for embedded communication systems.
Used in data acquisition modules.
Suitable for modem interface control.
Facilitates efficient data transfer via DMA.

UPD72001G-A8-22 FAQs

4 frequently asked questions generated from this part’s specifications.

What is the function of the PRI pin on the UPD72001G-A8-22?

In non-vector mode, the PRI pin controls interrupt generation. An interrupt signal is enabled if 'L' is input, unless interrupt vector output modes Type A-3 or Type B-2 are selected.

How does the PRO pin function in an interrupt daisy chain?

The PRO pin is an active-low output that controls interrupt requests from lower priority devices. When PRI is 'H', PRO is 'H'. When PRI is 'L', PRO indicates an interrupt request by going 'H' and no request by going 'L'.

When does the DRQTXA pin go high?

The active-high DRQTXA pin goes high when the transmitter of channel A enters the TX Buffer Empty status. The exact condition depends on the CR1 and D2 bit settings.

What is the function of the DTRA/DRQTXB pin?

This pin functions as DTRA for modem control when CR2A: D1, D0 are '0,0' or '0,1'. It functions as DRQTXB, a DMA request for transmitter channel B, when CR2A: D1, D0 are '1,0'.