Renesas UPD8880CY-A

Overview

UPD8880CY-A from Renesas Electronics is a 3-color CCD linear image sensor with (10680+10680) × 3 staggered pixels, 4 µm photocell pitch, and dual-sided analog shift register readout architecture. It delivers 2400 dpi resolution for A4/US letter scanning, features on-chip reset feed-through level clamp circuits and voltage amplifiers, and operates at +12 V supply with CMOS-compatible 5 V drive clocks.

For engineers reviewing the UPD8880CY-A datasheet, UPD8880CY-A pinout, UPD8880CY-A application, or UPD8880CY-A equivalent, this page provides verified technical context for high-resolution color document scanning systems requiring stable analog output linearity, low image lag (<7%), and spectral response matched to red (630 nm), green (540 nm), and blue (460 nm) primary filters.

Technical Context

The UPD8880CY-A implements a triple-row, staggered photodiode array with separate red, green, and blue pixel lines spaced at 64 µm (16-line offset between R/G and G/B) and 8 µm (2-line offset within each color). Each row uses dual-sided charge transfer registers clocked by independent φ1/φ2 and φ1L/φ2L signals to achieve high-speed, low-noise readout.

It integrates on-chip signal conditioning: reset feed-through level clamp (driven by φCLB), voltage amplifiers per output channel (VOUT1–VOUT3), and internal bias generation for CCD transfer gates (φTG1–φTG3). Timing supports both bit-clamp and line-clamp modes, with data rate up to 8 MHz and total transfer efficiency ≥92% at 6 MHz clocking.

Key Specifications

Pinout & Package

UPD8880CY-A is housed in a 32-pin plastic DIP package (10.16 mm width, 55.2 mm length) with integrated optical plastic cap. Pins marked "IC" (6, 7, 11, 12, 21, 22, 26, 27) must remain unconnected; NC pins (1, 8, 9, 10, 23, 24, 25, 28, 29, 30) require connection to GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CCD linear image sensor applications.

Compared with TCD2252D and ILX521A, the UPD8880CY-A provides full-color capture in a single device with integrated clamping and amplification, enabling simpler, higher-performance scanner designs-but requires more complex clock sequencing and tighter power supply regulation.

Availability

UPD8880CY-A is available at Aetrix Electronics and suitable for high-resolution document scanning, color facsimile transmission, and industrial barcode verification requiring stable component supply and long-lifecycle support.

Supply support for UPD8880CY-A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and sensor solutions for industrial, automotive, and infrastructure markets.

The UPD8880CY-A belongs to Renesas' legacy CCD linear image sensor product line, designed specifically for high-accuracy, high-speed color document capture in office and industrial imaging equipment.

FAQ

What is the maximum recommended data rate for UPD8880CY-A in bit-clamp mode?

The UPD8880CY-A supports a maximum data rate of 8 MHz in bit-clamp mode, as specified in the Recommended Operating Conditions table. At this rate, saturation voltage Vsat1 remains ≥2.5 V and image lag stays within 7.0%, provided fφ1/fφ2 ≤ 6 MHz and VOD is maintained at 12.0 V ±0.6 V. Exceeding 8 MHz risks increased image lag and reduced dynamic range due to incomplete charge transfer.

How should unused IC pins be handled on the UPD8880CY-A?

Unused IC pins (6, 7, 11, 12, 21, 22, 26, 27) on the UPD8880CY-A must remain unconnected-no pull-up, pull-down, or grounding is permitted. These pins are internally bonded to substrate or bias networks; external connection may disrupt internal voltage references or cause latch-up. The datasheet explicitly cautions against any connection to these terminals.

Does UPD8880CY-A include optical black reference pixels, and how are they used?

Yes, the UPD8880CY-A includes 48 optical black reference pixels per color line, located at the end of each valid pixel segment. These shielded pixels provide real-time DC offset and thermal drift compensation: their output is sampled during the blanking interval and subtracted from active pixel data via external CDS circuitry or digital post-processing, improving PRNU and DSNU performance.

What is the significance of the 64 µm line spacing specification for UPD8880CY-A?

The 64 µm line spacing between red-green and green-blue rows in the UPD8880CY-A enables precise vertical color registration in single-pass scanning. Combined with 8 µm intra-color line spacing, it allows reconstruction of full RGB samples per physical scan line without interpolation-critical for avoiding color fringing in high-resolution text and graphics reproduction.

Can UPD8880CY-A operate with a 3.3 V logic interface for clock inputs?

No, UPD8880CY-A requires CMOS-level clock inputs referenced to its +12 V supply: shift register clocks (φ1/φ2) demand 4.8–5.5 V high level and −0.3–0.2 V low level. A 3.3 V logic interface would fall below the VIH(min) threshold, causing unreliable clock edge detection and potential charge transfer failure. Level-shifting to 5 V is mandatory.