ADP5585ACBZ-02-R7 10-I/O Keypad Controller | Analog Devices
N.º da peça: ADP5585ACBZ-02-R7 ✓ AtivoADP5585ACBZ-02-R7 Visão geral
An I/O expander is an interface IC that increases the number of general-purpose input/output pins available to a microcontroller or embedded processor. The ADP5585 belongs to the broader hierarchy of I/O expander, interface IC, and semiconductor. In addition to conventional digital I/O expansion, this device incorporates dedicated keypad-scanning, programmable logic, reset, PWM, and event-recording functions, allowing a host to offload repetitive peripheral monitoring and conserve processor bandwidth.
The principal verified features include 10 configurable I/Os and a 16-element event FIFO for recording keypad events. The FIFO allows the processor to read recorded events through the I2C-compatible interface instead of continuously polling every matrix input. Programmable logic and a PWM generator provide additional peripheral functions without requiring separate devices, while the reset generator supports system control functions. The -02 ordering option is specifically listed as a no-pullup keypad controller configuration.
Internally, the ADP5585 combines programmable digital I/O resources with a keypad matrix decoder and event-recording architecture. A larger matrix can be configured with related -01 ordering options, but the exact supported matrix arrangement and event identifiers depend on the selected pins and configuration. Because the target -02 option omits pullups, external input conditioning or pullup resistors may be required wherever the scanned keypad or digital input interface does not otherwise establish the required high state. The host should configure the device through its register interface before relying on advanced functions.
Typical uses include compact keypad interfaces in remote controls, medical and industrial instrumentation, consumer appliances, and portable equipment. Its small 1.59 mm by 1.59 mm WLCSP footprint is particularly useful when board area is constrained. The device can also reduce host pin count by combining keypad scanning, discrete digital I/O, programmable logic, reset generation, and PWM generation in one package. Suitable companion components include host microcontrollers, I2C bus devices, keypad matrices, and analog or mixed-signal front ends.
Designers should account for the no-pullup configuration of the -02 option and confirm the external resistors required by the selected keypad topology. I2C pullups and all supporting pullup networks should be calculated for the actual bus voltage, speed, capacitance, and number of connected devices. Layout must preserve short, clean I2C routing and adequate ground return paths in the compact WLCSP footprint. Software should use the FIFO and interrupt mechanism to avoid unnecessary polling and should test event behavior across the configured matrix.
This page combines verified manufacturer and distributor information with a practical feature analysis, same-brand drop-in assessment, pinout limitation, application guidance, and design notes. It distinguishes confirmed capabilities from electrical parameters that require the full manufacturer datasheet, helping engineers make a defensible sourcing and design decision.
Alternativas drop-in para ADP5585ACBZ-02-R7 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADP5585ACBZ-02-R7 (mesmo formato e footprint) — diferindo em PWM Generator, Package Type, Programmable Logic, Reset Generator.
ADP5585ACBZ-00-R7
✅ Drop-InConsulte o preço
Ver ficha técnica →ADP5585ACBZ-01-R7
✅ Drop-InConsulte o preço
Ver ficha técnica →ADP5585ACBZ-02-R7 Especificações
| Product Type | 10-I/O port expander and keypad controller |
| Configurable I/O Count | 10 I/O |
| Event FIFO Depth | 16 events |
| Host Interface | I2C-compatible |
| Integrated Keypad Decoder | Yes |
| Programmable Logic | Yes |
| Reset Generator | Yes |
| PWM Generator | Yes |
| Ordering Option | -02, no-pullup configuration |
| Package Type | 16-WLCSP |
| Package Dimensions | 1.59 mm x 1.59 mm |
| Tipo de montagem | Surface Mount |
Guia de Configuração de Pinos do ADP5585ACBZ-02-R7 1.59 mm x 1.59 mm
Configuração de pinos para ADP5585ACBZ-02-R7 (pacote 1.59 mm x 1.59 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para ADP5585ACBZ-02-R7.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ADP5585ACBZ-02-R7 é adequado para 6 aplicaçãos: Compact Consumer Keypad Interface, Medical Instrument Control Panel, Industrial Instrumentation Interface, Remote Control and HMI, Programmable Logic Peripheral, Low-Power Embedded Control Module.
Compact Consumer Keypad Interface
The ADP5585ACBZ-02-R7 fits compact keypads because it combines a keypad matrix decoder with 10 configurable I/Os in a 16-WLCSP package measuring 1.59 mm by 1.59 mm. The host reads detected key events through the I2C-compatible interface from a 16-event FIFO instead of polling every matrix line. This can reduce firmware overhead and free controller pins for other functions. Because the -02 ordering option is identified as the no-pullup configuration, the PCB must provide the required external bias resistors for any keypad arrangement that depends on them. Firmware should also confirm the selected row and column mapping during configuration.
Recomendado
Medical Instrument Control Panel
The ADP5585ACBZ-02-R7 is useful for medical and diagnostic equipment that needs a compact front-panel interface plus additional digital I/O. Its 10-I/O port expander and internal keypad decoder reduce the number of host-processor pins required for controls, indicators, and matrix keys. The 16-event FIFO allows the main controller to retrieve several queued keypad events through I2C, supporting efficient event-driven firmware. The 16-WLCSP footprint preserves board area in compact instruments. Since the target is the no-pullup option, engineers must validate the external resistor network and verify that all polarity, leakage, and reset behavior satisfy the finished equipment's safety and validation requirements.
Recomendado
Industrial Instrumentation Interface
The ADP5585ACBZ-02-R7 can extend a host microcontroller in industrial instrumentation by combining 10 configurable I/Os with programmable logic and a PWM generator. Those integrated functions can implement front-panel controls, status indicators, simple periodic outputs, or auxiliary logic without allocating several separate peripheral devices. The I2C-compatible host connection and 16-event FIFO simplify event handling, while the compact 1.59 mm by 1.59 mm WLCSP package supports dense control boards. Because the -02 configuration omits pullups, external resistors and input defaults must be designed for the actual logic levels. Production designs should also verify operating-temperature and supply limits against the instrumentation environment using the manufacturer datasheet.
Recomendado
Remote Control and HMI
The ADP5585ACBZ-02-R7 is well matched to remote controls and human-machine interfaces that combine a matrix keypad with limited host-controller resources. Its integrated decoder identifies keypad events, and the 16-element FIFO allows several presses to be recorded while the processor performs another task. Ten additional configurable I/Os can support indicators, switches, or other digital controls. The small 16-WLCSP footprint is valuable in handheld products where every millimeter matters. Designers should account for the target's no-pullup configuration, establish deterministic defaults for inactive inputs, and use low-leakage external resistors where battery life is sensitive.
Recomendado
Programmable Logic Peripheral
The ADP5585ACBZ-02-R7 adds programmable logic and PWM generation to a host processor through a compact I2C-connected package. These functions can reduce the need for a separate programmable-logic device when the required behavior is modest, while the 10 configurable I/Os provide connection points for sensors, indicators, or simple actuators. The device's reset generator can support controlled peripheral startup, and its FIFO can record keypad events when the part is also used as a front-panel controller. The -02 no-pullup arrangement requires careful definition of every input state. Designers should confirm supported logic and PWM parameters from the manufacturer datasheet before implementing timing-critical functions.
Recomendado
Low-Power Embedded Control Module
The ADP5585ACBZ-02-R7 can offload keypad monitoring from a low-power embedded controller, allowing the processor to sleep between relevant events rather than repeatedly scanning matrix inputs. The internal decoder and 16-event FIFO provide event buffering, while the I2C-compatible interface lets the host retrieve stored activity. This architecture is potentially useful in portable monitoring equipment, appliances, and battery-operated accessories. The target's no-pullup configuration means that resistor values must be selected to balance valid logic levels, leakage, and current consumption. Firmware should use the device's supported event or status mechanism efficiently and validate timing against the host clock and bus speed before production release.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADP5585ACBZ-02-R7 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADP5585ACBZ-00-R7 | ADP5585ACBZ-01-R7 |
|---|---|---|---|
| Package | 16-WLCSP (1.59 mm x 1.59 mm) | 16-WLCSP (1.59 mm x 1.59 mm) - same | 16-WLCSP (1.59 mm x 1.59 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Configurable I/O Count | 10 I/O | 10 I/O | 10 I/O |
| Event FIFO Depth | 16 events | 16 events | 16 events |
| Host Interface | I2C-compatible | I2C-compatible | I2C-compatible |
| Integrated Keypad Decoder | Yes | Yes | Yes |
| Programmable Logic | Yes | Yes | Yes |
| Reset Generator | Yes | Yes | Yes |
| PWM Generator | Yes | Yes | Yes |
Principais diferenciais
- Combines keypad decoding, event buffering, programmable logic, reset generation, PWM, and GPIO expansion (vs PCA9536DR)
- Uses an event FIFO to reduce continuous keypad polling (vs ADP5585ACBZ-00-R7)
- Occupies a compact 1.59 mm by 1.59 mm package (vs ADP5585ACBZ-01-R7)
Notas de projeto
The ADP5585ACBZ-02-R7 uses a compact 16-WLCSP package, so PCB layout should follow the land pattern and solder recommendations in the Analog Devices datasheet. Place the device close to the keypad matrix to minimize trace length and susceptibility to coupling. Keep the I2C routing short, provide a continuous ground reference, and place required pullup and input-bias resistors where they can be reached with low-resistance signal paths. Verify the final layout against the package drawing and assembly process.
Do not assume that a generic 16-WLCSP I/O expander is interchangeable with this part. The ADP5585 integrates keypad decoding, programmable logic, reset generation, PWM, and a 16-event FIFO, and the -02 ordering option is specifically identified as having no pullups. Before replacing the target with ADP5585ACBZ-00-R7 or ADP5585ACBZ-01-R7, compare the ordering-option table, configuration registers, external resistor requirements, matrix mapping, and event identifiers in the manufacturer datasheet.
The verified data does not provide the ADP5585 supply-voltage range, operating current, or I2C address, so those values must be obtained from the manufacturer datasheet before designing the power tree. In particular, calculate the pullup current at the actual I2C bus voltage and confirm the total rail budget with the highest expected load. Because the -02 option has no integrated pullups, external resistor current can become a meaningful part of the system consumption and should be included in low-power calculations.
Do not treat the 16-event FIFO as unlimited event storage. Firmware should drain queued events at a rate that prevents overflow during rapid or sustained key input and should use the supported status or interrupt behavior rather than continuous polling. Confirm that the configured row and column pins correspond to the intended event identifiers. A smaller matrix may expose only a subset of identifiers, so functional testing should cover every implemented key and simultaneous or rapid input conditions.
Informações de conformidade
The supplied verified data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this ordering option. These fields remain unknown rather than being inferred from the manufacturer or distributor listings.
