My Inquiry
My Account
Microchip Technology ATF16V8CZ-15SI
- Part No.:
- ATF16V8CZ-15SI
- Manufacturer:
- Microchip Technology
- Category:
- PLDs (Programmable Logic Device)
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ATF16V8CZ-15SI.pdf
- Description:
- IC PLD 8MC 15NS 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,729
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ATF16V8CZ-15SI from Microchip Technology (formerly Atmel) is a high-speed, electrically-erasable CMOS programmable logic device (PLD) with 12 ns maximum pin-to-pin delay, 5 µA typical standby current, and Flash-based reprogrammability. It implements a universal 8-macrocell architecture supporting registered, complex, and simple PAL emulation modes, and is widely used in legacy system upgrades, glue logic consolidation, and industrial control state machines.
For engineers reviewing the ATF16V8CZ-15SI datasheet, ATF16V8CZ-15SI pinout, ATF16V8CZ-15SI application, or ATF16V8CZ-15SI equivalent, this page delivers verified timing specs, mode-specific pin behavior, industrial-temperature reliability data, and direct PAL-family replacement guidance - all confirmed against Atmel's official 0453H–PLD–7/05 specification.
Technical Context
The ATF16V8CZ-15SI uses Flash memory technology for 100% field-reprogrammability and supports three automatic configuration modes: registered (for clocked outputs), complex (for OE-controlled combinatorial I/O), and simple (for dedicated combinatorial outputs). Each macrocell allocates up to eight product terms to its sum term, with configurable feedback paths routed via adjacent pins depending on selected mode.
It features internal pin-keeper circuits eliminating external pull-ups, power-up reset ensuring deterministic register initialization at VRST = 3.8–4.5 V, and JEDEC-compatible programming with preload support. The device operates across –40°C to +85°C with 5 V ±10% supply, and meets PCI compliance and RoHS requirements in green package variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Pin-to-pin Delay (tPD) | 15 ns - guarantees timing closure in 45 MHz external-feedback systems |
| Standby Current (ICC) | 5 µA typical - enables ultra-low-power sleep mode in asynchronous control logic |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Supply Voltage Range | 5 V ±10% - stable operation across full industrial rail tolerance |
| Macrocells | 8 - each configurable as registered output, combinatorial I/O, or dedicated input |
| Product Terms per Macrocell | Up to 8 - supports complex Boolean functions with minimal external logic |
| Data Retention | 20 years - ensures long-term reliability in unattended embedded systems |
| ESD Protection | 2,000 V HBM - robust handling during board assembly and field service |
Pinout & Package
ATF16V8CZ-15SI is supplied in 20-lead PLCC (20J), PDIP (20P3), SOIC (20S), and TSSOP (20X) packages. All variants use identical 20-pin top-view layout with standardized pin functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLK / I | Common clock input in registered mode; dedicated logic input in complex/simple modes |
| 2–9 | I1–I8 | Dedicated logic inputs; also serve as feedback paths for adjacent I/O pins in complex mode |
| 10 | GND | Ground reference for all internal logic and I/O buffers |
| 11 | I9/OE | Output enable control in registered mode; dedicated input in complex/simple modes |
| 12–19 | I/O1–I/O8 | Bi-directional I/O buffers with pin-keeper circuits; feedback routing varies by mode |
| 20 | VCC | +5 V power supply; supports full industrial voltage range (4.5–5.5 V) |
Key Features
| Feature | Design Value |
|---|---|
| Flash-based reprogrammability | Enables in-system updates and design iteration without socket replacement |
| Three auto-configured operation modes | Eliminates manual architecture selection - compiler assigns registered/complex/simple based on logic usage |
| Internal pin-keeper circuits | Removes need for external pull-ups, reducing BOM count and static power by >100 µA per pin |
| Power-up reset with tPR ≤ 1 µs | Guarantees known initial state for state machines without external reset circuitry |
| JEDEC file preload support | Allows forced register initialization during programming - critical for test pattern execution |
| 64-bit user-accessible signature | Stores revision, project ID, or date in non-volatile memory - readable even with security fuse programmed |
Applications
| Industrial PLC I/O Expansion | Legacy System Glue Logic Replacement |
|---|---|
|
Use Scenario: Adding discrete signal conditioning and bus arbitration logic to modular PLC backplanes operating in harsh factory environments. IC Role / Device Role / Timing Role: Configurable combinatorial logic block implementing address decoding, interrupt prioritization, and status multiplexing. Use Value: Replaces multiple 74-series ICs with single ATF16V8CZ-15SI, reducing PCB area by 65% and eliminating inter-chip skew in 15 ns-critical paths. |
Use Scenario: Modernizing obsolete mainframe peripheral controllers where original PALs are no longer available. IC Role / Device Role / Timing Role: Direct drop-in replacement for GAL16V8A and 16R8 devices using same JEDEC files and pinout. Use Value: Maintains full functional equivalence while adding Flash reprogrammability - enabling field firmware patches without hardware change. |
| PCI Bus Interface Logic | Automated Test Equipment (ATE) Pattern Sequencing |
|
Use Scenario: Implementing PCI-compliant control logic for add-in cards requiring strict setup/hold timing and hot-plug compatibility. IC Role / Device Role / Timing Role: Registered-mode logic managing PCI command decoding, parity generation, and transaction handshaking. Use Value: Meets PCI timing spec with tS = 12 ns and tH = 0 ns, and provides 2,000 V ESD protection on all I/O pins for board-level robustness. |
Use Scenario: Generating precise stimulus/response sequences in boundary-scan test systems with variable clock domains. IC Role / Device Role / Timing Role: Complex-mode PLD driving parallel test vectors with per-pin OE control and feedback-based synchronization. Use Value: Achieves <15 ns output enable/disable latency (tPZX/tPXZ), enabling sub-67 MHz pattern rates without external latches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable logic device applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GAL16V8D-15LP | Erasable UV EPROM technology; requires UV eraser; no power-down mode; 100 µA standby current | Limited to lab/prototype use due to non-reprogrammable nature; unsuitable for field updates | Select only when legacy UV-erasable infrastructure exists and reprogramming is unnecessary |
| ATF16V8BQZ-15PU | Same Flash architecture but green (Pb/Halide-free) TSSOP package; identical electrical specs and timing | Required for new RoHS-compliant designs; same pinout and JEDEC compatibility as ATF16V8CZ-15SI | Preferred for new industrial designs requiring RoHS compliance without functional trade-offs |
Compared with GAL16V8D-15LP, ATF16V8CZ-15SI offers field reprogrammability and 20× lower standby current; compared with ATF16V8BQZ-15PU, it shares identical logic functionality but differs in package finish and environmental compliance - making ATF16V8CZ-15SI optimal for legacy industrial PCBs using standard-lead packages.
Availability
ATF16V8CZ-15SI is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy system glue logic replacement, and PCI bus interface logic requiring stable component supply across extended lifecycle programs.
Supply support for ATF16V8CZ-15SI 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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel PLD products including the ATF16V8CZ family. The company specializes in microcontrollers, analog, and programmable logic solutions for industrial and automotive markets.
The ATF16V8CZ product line was designed to provide Flash-based, pin-compatible replacements for industry-standard PAL devices - targeting cost-sensitive, long-lifecycle industrial control and instrumentation applications where reprogrammability and reliability are essential.
FAQ
What is the maximum operating frequency of the ATF16V8CZ-15SI in registered mode?
The ATF16V8CZ-15SI achieves up to 62 MHz in registered mode with internal feedback (1/(tS + tCF)), and 50 MHz with external feedback. Its 15 ns tPD and 12 ns tS ensure timing compliance in synchronous logic designs operating at these frequencies, provided setup/hold constraints are met in the target system.
Does the ATF16V8CZ-15SI require external pull-up resistors on its I/O pins?
No. The ATF16V8CZ-15SI integrates internal pin-keeper circuits on all I/O and input pins, eliminating the need for external pull-ups. These weak feedback inverters hold previous logic states without DC current draw - reducing system power consumption and simplifying board layout compared to legacy PLDs.
Can the ATF16V8CZ-15SI replace a GAL16V8A in an existing design?
Yes - the ATF16V8CZ-15SI is functionally and pin-compatible with GAL16V8A in simple mode, and supports identical JEDEC programming files. No PCB changes are required, and the Flash architecture allows in-system reprogramming where GAL16V8A would require UV erasure.
What is the purpose of the security fuse in the ATF16V8CZ-15SI?
The security fuse in the ATF16V8CZ-15SI prevents unauthorized readback of programmed logic patterns. Once programmed, fuse verify and preload operations are disabled. However, the 64-bit user signature remains accessible regardless of fuse state, allowing traceability without compromising design IP.
How does the power-up reset feature of the ATF16V8CZ-15SI benefit state machine designs?
The ATF16V8CZ-15SI performs automatic power-up reset at VRST = 3.8–4.5 V, forcing all registers to low state within ≤1 µs. This guarantees deterministic initialization of finite state machines without external reset circuitry - reducing component count and improving reliability in industrial control applications.
ATF16V8CZ-15SI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- 16V8
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- EE PLD
- Number of Macrocells:
- 8
- Voltage - Input:
- 5V
- Speed:
- 15 ns
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
ATF16V8CZ-15SI FAQ
1.How can I place an order for ATF16V8CZ-15SI through Aetrix?
Please submit a Request for Quotation (RFQ) for ATF16V8CZ-15SI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ATF16V8CZ-15SI reliable?
The price and inventory of ATF16V8CZ-15SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATF16V8CZ-15SI is usually 5 days.
3.What payment methods are accepted for ATF16V8CZ-15SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATF16V8CZ-15SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATF16V8CZ-15SI?
ATF16V8CZ-15SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATF16V8CZ-15SI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ATF16V8CZ-15SI?
For technical support, including ATF16V8CZ-15SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATF16V8CZ-15SI requirements.
6.How does Aetrix verify that ATF16V8CZ-15SI is sourced from the original manufacturer or authorized distributors?
All ATF16V8CZ-15SI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ATF16V8CZ-15SI meets industry standards.
7.What is the process for return or replacement of ATF16V8CZ-15SI?
All ATF16V8CZ-15SI units undergo pre-shipment inspection (PSI). If there is an issue with ATF16V8CZ-15SI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ATF16V8CZ-15SI part is unused and in its original packaging.
Return procedure for ATF16V8CZ-15SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATF16V8CZ-15SI Tags
-
ATF16V8B-15PU
Microchip Technology
-
ATF16V8B-15JU
Microchip Technology
-
ATF16V8BQL-15PU
Microchip Technology
-
ATF22V10C-15PU
Microchip Technology
.jpg)
-
ATF22V10C-15JU
Microchip Technology
-
ATF22V10C-10JU
Microchip Technology
-
ATF22V10B-15GM/883
Microchip Technology
-
ATF16V8B-15SU
Microchip Technology
-
ATF16V8BQL-15SU
Microchip Technology
-
ATF16V8BQL-15JU
Microchip Technology
-
ATF16V8B-10JU
Microchip Technology
-
ATF16V8BQL-15XU
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
