ATF16V8C-7XC - 7ns 16V8 EECMOS PLD | Microchip Technology
Référence : ATF16V8C-7XC ✗ Fin de vieATF16V8C-7XC Présentation
A programmable logic device, or PLD, is a configurable semiconductor that implements digital logic functions from AND, OR, and related Boolean terms. The ATF16V8C belongs to the simple PLD family, where each of its 8 macrocells can support a dedicated output function. This places it between fixed logic gates and larger complex PLDs, providing compact hardware implementation of glue logic, control functions, decoding, and compact state-machine functions.
The ATF16V8C architecture emulates many 20-pin PAL devices and most 16R8-family combinational PLDs. Its 16V8 organization provides eight outputs, with each output allocated eight product terms. Three configurable operating modes allow software to implement increasingly complex combinational and registered logic functions. The device is also compatible with CMOS and TTL logic levels, which simplifies integration with mixed digital circuits.
ATF16V8C-7XC uses proven electrically erasable flash memory rather than a one-time-programmable fuse structure. Designers can change the programmed configuration without replacing the device, which is useful during prototyping, production revision, or field updates. The manufacturer describes speed options down to 5 ns, while this exact 7 ns ordering code is identified as a commercial-temperature 20-TSSOP variant.
Typical uses include address decoding, control-signal generation, interface adaptation, protocol translation, and compact finite-state-machine logic. The ATF16V8C can reduce the number of discrete gates required for glue logic while retaining user-programmable flexibility. A programmer or development system is required to create and download the configuration file before normal operation.
Designers should verify the configured operating mode, pin assignment, and power-down polarity in the manufacturer pin description table. Decoupling and signal-integrity practices remain important because an 8 macrocell PLD can still be sensitive to noisy supply rails or poorly controlled clock and asynchronous inputs. The 20-TSSOP footprint is compact but requires careful fanout and thermal assessment.
This product page combines the manufacturer architecture description with practical replacement guidance, package information, programming considerations, and verified sourcing references. It is intended to help engineers identify whether the ATF16V8C-7XC architecture, speed grade, temperature class, and 20-TSSOP footprint fit a legacy or new programmable-logic design.
Alternatives de remplacement direct pour ATF16V8C-7XC — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATF16V8C-7XC (même facteur de forme et même empreinte) — différant par Architecture, Package.
ATF16V8C-7XI
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATF16V8C-7XC Valeurs maximales et caractéristiques électriques
| Device Type | 16V8 electrically erasable CMOS programmable logic device |
| Architecture | High-performance EECMOS PLD |
| Macrocell Count | 8 macrocells |
| Equivalent Gate Count | 300 gates |
| Output Count | 8 outputs |
| Product Terms per Output | 8 product terms |
| Rated Speed | 7 ns |
| Program Memory Technology | Electrically erasable flash memory |
| Nominal Supply Voltage | 5 V |
| Commercial Supply Tolerance | 5 V ±5% |
| Industrial Supply Tolerance | 5 V ±10% |
| Pin-Controlled Power-Down Current | 100 µA |
| Logic Compatibility | CMOS and TTL compatible |
| Boîtier | 20-TSSOP |
| Package Width | 4.40 mm (0.173 inch) |
| Style de montage | Surface mount |
| Temperature Grade | Commercial |
| Terminal Count | 20 terminals |
Guide de configuration des broches du ATF16V8C-7XC 4.40 mm (0.173 inch)
Configuration des broches du ATF16V8C-7XC (boîtier 4.40 mm (0.173 inch)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATF16V8C-7XC.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATF16V8C-7XC convient pour 6 applications: Address Decoding, Interface Control Logic, Compact State-Machine Logic, Legacy Peripheral Emulation, Control-Signal Conditioning, Industrial Test and Control.
Address Decoding
ATF16V8C-7XC is suitable for implementing address or command decoding close to a processor, memory, or peripheral. Its eight macrocells can generate multiple output functions, and each output is allocated eight product terms for Boolean decoding. This provides a compact alternative to networks of discrete AND and OR gates while retaining electrically erasable configuration for late design changes. The 5 V operating range and CMOS/TTL-compatible interfaces support conventional digital logic levels. During implementation, create the decode equations in the programming tool, verify active-high or active-low output polarity, and test every valid and invalid address condition before releasing the fuse map.
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Interface Control Logic
ATF16V8C-7XC can implement protocol-specific control, qualify signals, and translate between two fixed digital interfaces. Its eight outputs and configurable operating modes allow combinational and registered functions to share the same device, while electrically erasable flash memory permits late corrections without replacing the IC. This application is useful when glue logic would otherwise require several standard gate packages and reduce board-space efficiency. Keep every interface signal within the device's specified CMOS and TTL-compatible levels, account for output timing across the selected mode, and validate the compiled configuration with timing simulation before programming production devices.
Recommandé
Compact State-Machine Logic
ATF16V8C-7XC can implement compact state-machine control when the required states and outputs fit within eight macrocells and eight product terms per output. The programmable architecture is useful for sequencing reset, busy, acknowledge, and enable signals in small embedded systems. Its electrically erasable configuration supports iterative development without relying on one-time-programmable devices. Use the manufacturer-supported logic compiler and select the operating mode carefully because registered and combinational behavior affects timing and pin allocation. Confirm maximum operating frequency, output drive, and asynchronous-input handling in the device documentation before relying on it for high-speed control paths.
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Legacy Peripheral Emulation
ATF16V8C-7XC fits legacy peripheral-emulation and product-discontinuation projects because its 16V8 organization emulates many 20-pin PAL devices and most 16R8-family combinational PLDs. This architecture can reproduce legacy decode and control behavior in a compact programmable device, helping a redesign preserve an existing system interface. Electrically erasable flash technology also makes the migration less disruptive than a fuse-based one-time-programmable replacement. Before substitution, verify JEDEC fuse-map compatibility, pin behavior, power-down polarity, and registered-versus-combinational requirements. A successful board-level test should include timing margin and every system reset sequence.
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Control-Signal Conditioning
ATF16V8C-7XC can condition asynchronous control signals, combine status inputs, and generate mutually exclusive outputs for legacy systems. Eight product terms per output provide enough Boolean complexity for many simple control functions, while the configurable architecture avoids a fixed gate array. The 100 µA pin-controlled power-down option can reduce standby consumption when the surrounding circuit allows the device to be disabled. Determine the required active power-down polarity from the pin description, account for state changes around enable and reset, and ensure every generated output has a defined state during startup. Programming-file verification is essential for systems where an incorrect output could affect external hardware.
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Industrial Test and Control
ATF16V8C-7XC can implement fixed test-sequence control, fixture routing, and stimulus-enable logic in compact legacy test equipment. Electrically erasable programming permits controlled revision of test patterns, while the 16V8 structure keeps medium-complexity control functions within one IC. Commercial-grade temperature suitability should be checked against the operating environment; ATF16V8C-7XI is the identified industrial 20-TSSOP option. Add the device close to the controlled interface drivers, maintain a stable 5 V rail within the applicable tolerance, and test both normal and power-down transitions. Review output timing against the test fixture's required settling window.
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Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATF16V8C-7XC — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATF16V8C-7XI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 20-TSSOP | 20-TSSOP - same |
| Architecture | 16V8 EECMOS PLD | 16V8 EECMOS PLD |
| Macrocell Count | 8 macrocells | 8 macrocells |
| Temperature Grade | Commercial | Industrial |
| Program Memory | Electrically erasable flash memory | Electrically erasable flash memory |
| Nominal Supply Voltage | 5 V | 5 V |
Principaux différenciateurs
- Electrically erasable configuration supports design revisions (vs ATF16V8C-7XI)
- Commercial 20-TSSOP option for normal-temperature assemblies (vs ATF16V8C-7XI)
- Direct 16V8 architecture reuse for compatible legacy logic (vs ATF16V8C-7SC)
Notes de conception
Use the manufacturer pin description table to assign the 20 TSSOP lands before routing the board. The ATF16V8C-7XC requires a nominal 5 V supply, and the commercial version is specified at 5 V ±5%. Place the input and output bypass capacitors close to the supply pins, keep clock and asynchronous control traces short, and provide adequate ground-return paths. Do not substitute the 20-SOIC ATF16V8C-7SC footprint because its physical lead pattern differs.
Check the propagation delay and output timing in the operating mode used by the design. The 7 ns speed grade identifies the device family speed, but registered and combinational configurations can produce different timing paths. Establish which inputs are asynchronous, constrain their arrival in the design tool, and verify setup and hold requirements at the receiving logic. Incorrect mode or polarity configuration can appear as intermittent functional failures even when the programming step reports success.
Confirm the compiler's device selection, fuse map, pin assignment, and operating-mode settings before programming. The ATF16V8C family supports multiple modes, and using a GAL16V8-oriented configuration without reviewing the Atmel ATF16V8C mapping can produce unexpected output behavior. Validate power-down polarity and startup states in hardware. Because the target is obsolete, archive the compiled file, programmer settings, test results, and approved alternate MPN with the production documentation.
Informations de conformité
No definitive RoHS, REACH, lead-free, halogen-free, or conflict-minerals status was established for the exact MPN. AEC-Q100 qualification is not stated for this commercial PLD.
