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Microchip Technology ATF2500C-20PI

View All Display Drivers by Microchip Technology

Part Number:
ATF2500C-20PI
Manufacturer:
Microchip Technology
Category:
Display Drivers
RoHs:
Non-RoHS Compliant
Datasheet:
ATF2500C-20PI_Datesheet
Description:
IC CPLD 24MC 20NS 40DIP
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Specifications

Type

Paramete

Type

Paramete

Qualification

Voltage Supply - Internal

4.5V ~ 5.5V

Number of I/O

Mounting Type

Through Hole

Number of Macrocells

Supplier Device Package

40-PDIP

Grade

Operating Temperature

-40°C ~ 85°C (TA)

Package / Case

40-DIP (0.600", 15.24mm)

Number of Logic Elements/Blocks

Delay Time tpd(1) Max

20 ns

Number of Gates

Programmable Type

In System Programmable

Overview

ATF2500C-20PI – Complete Datasheet & Application Summary

1. General Description

ATF2500C-20PI is a high-density, high-speed CMOS Electrically-Erasable Programmable Logic Device (EE-PLD) from Atmel (now Microchip). It delivers 416 product terms, 48 buried flip-flops, and 24 flexible I/O macrocells in a 40-pin PDIP package. The device is optimized for glue logic, state machines, address decoding, and DSP interfaces with 20ns propagation delay and industrial temperature operation.

2. Key Features

Logic Density: 416 fully-connected product terms
Macrocells: 24, each with 2 flip-flops (D or T-type), 72 sum terms
Speed Grade: 20ns pin-to-pin delay, 40MHz external feedback
I/Os: 24 bi-directional pins, individual OE control
Clocking: Product-term or pin-clock per flip-flop, async/sync reset
Feedback: 48 registered + 24 combinatorial paths
Security: Programmable security fuse, 2000V ESD protection
Packages: 40P6 (0.6" PDIP) industrial (-40°C to +85°C)
Green Option: Pb/Halide-free & RoHS compliant (-20PI → -20PU)

3. Part Number Decoding

Segment	Meaning
ATF2500C	Base device family
-20	20ns tPD speed grade
P	PDIP package (0.6" row spacing)
I	Industrial temperature (-40°C to +85°C)

4. Pin Configuration (40P6 PDIP)

Pin	Name	Type	Description
1	CLK/IN	Input	Global / pin clock + array input
2–9, 17–20	IN	Input	Dedicated array inputs
10, 11	VCC	Power	+5V ±10%
12, 31	GND	Power	0V reference
13–30, 32–39	I/O 0–23	Bi-dir	Macrocell outputs / array inputs
40	NC	–	No connect (do not float) Pin 4&26 are extra GND in PLCC/JLCC only; not bonded in PDIP.

5. Macrocell Architecture (per I/O)

Resource	Count	Notes
Product Terms	17 (12 + 5)	12 sum, 5 control (AR, CK1, CK2, OE, SP)
Flip-Flops	2 (Q1, Q2)	D or T-type, individually selectable
Sum Terms	3	Combinable → up to 12 PTs per sum
Clocks	2 PT + 1 pin	Independent per FF
Reset	Async AR + Sync SP	Per macrocell
Output Enable	1 PT	Per I/O

6. AC Performance (-20 Grade, Industrial)

Parameter	Value	Unit
tPD1 Input → Comb. Out	20	ns max
tPD2 Feedback → Comb. Out	20	ns max
tCOA PT-Clock → Output	20	ns max
tCOS Pin-Clock → Output	11	ns max
FMAX External Feedback	40	MHz
FMAX Internal Feedback	50	MHz
tSIA Input Setup (PT clk)	10	ns min
tSIS Input Setup (Pin clk)	14	ns min
tWA PT-Clock Width	11	ns min
tWS Pin-Clock Width	7	ns min

7. Power & DC Specifications

Symbol	Parameter	Industrial Limits
VCC	Supply	5V ±10%
ICC Standby	Max	130mA @ 5.5V, 25°C
VIL	Input Low	-0.6V to 0.8V
VIH	Input High	2.0V to VCC+0.75V
VOL	Output Low	0.5V max @ 6mA
VOH	Output High	2.4V min @ -4mA
CIN	Input Capacitance	6pF max
CIO	I/O Capacitance	12pF max

8. Special Functions

8.1 Power-Up Reset

VRST 3.8–4.5V; tPR 600–1000ns
All registers reset to ‘0’; outputs follow polarity bit
VCC rise must be monotonic; clock stable during tPR

8.2 Security Fuse

One-time programmable; prevents read-back of fuse map
Inhibits Preload & Q2 observability once set
Program last after verification

8.3 Pin-Keeper (Bus-Hold)

Weak latch maintains last-driven level on unused inputs/I/Os
Enabled/disabled via compiler device selection
Easily overdriven by TTL/CMOS drivers

8.4 Preload / Observability

10.25V–10.75V on SMP pin enters test modes
Allows asynchronous load/read of any register for bed-of-nails testing

9. Software & Programming

Compiler Support: Atmel WinCUPL, Synario, ProChip, third-party tools
Device Codes:V2500 – ATV2500H compatible (pin-keeper disabled)V2500B – ATV2500B/BQ compatibleATF2500C – Full feature set, user-row & pin-keeper programmable
JEDEC Fuses: 71,816 (includes user row 64 bits)
Programming Voltage: 10.25V–10.75V on SMP pin
Third-Party Programmers: Dataman, Minato, BP Microsystems, Elnec, etc.

10. Package Information (40P6)

Dimension	Millimeters	Inches
Body Length	52.07–52.58	2.050–2.070
Body Width	15.24–15.88	0.600–0.625
Lead Pitch	2.54	0.100
Lead Width	0.36–0.56	0.014–0.022
Seating Plane	3.05–3.56	0.120–0.140
Compliant to	JEDEC MS-011 Variation AC	–

11. Environmental & Reliability

Temperature Range: -40°C to +85°C (Industrial)
Storage: -65°C to +150°C
ESD Rating: 2000V HBM, 200V MM
Latch-up Immunity: >200mA
Data Retention: 10 years @ 85°C
RoHS: Green “U” suffix available (-20PU)

12. Ordering Information

Ordering Code	Package	Temp Range	Speed	Green
ATF2500C-20PI	40P6 PDIP	-40°C to +85°C	20ns	Standard
ATF2500C-20PU	40P6 PDIP	-40°C to +85°C	20ns	Pb/Halide-free

13. Typical Applications

Glue Logic for microprocessor systems
State Machines & sequence controllers
Address Decoding & wait-state generators
DSP/MCU Peripheral Interfaces
Legacy Replacement for ATV2500B/BQ/H devices

14. Support & Tools

Software: Atmel WinCUPL (free), Intel-Format JEDEC
Programmers: Dataman 48Pro2, Minato PE-5000, BP-Micro, Elnec BeeProg+
IBIS Models: Available on Microchip website
Application Notes: AN-2500-PLD-MIGRATION, AN-ATF-SPEED

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