Rainbow Electronics ATF2500CQL - Manual

1
Features
• High-performance, High-density, Electrically-erasable Programmable Logic Device
• Fully Connected Logic Array with 416 Product Terms
• 10 ns Maximum Pin-to-pin Delay for 5V Operation
• Low-power Edge-sensing “L” Option with <1 mA Standby Current
• 24 Flexible Output Macrocells
– 48 Flip-flops – Two per Macrocell
– 72 Sum Terms
– All Flip-flops, I/O Pins Feed in Independently
• D- or T-type Flip-flops
• Product Term or Direct Input Pin Clocking
• Registered or Combinatorial Internal Feedback
• Backward Compatible with ATV2500B/BQL and ATV2500H/L Software
• Advanced Electrically-erasable Technology
– Reprogrammable
– 100% Tested
• 44-lead Surface Mount Package
Block Diagram
Description
The ATF2500C is the highest-density PLD available in a 44-pin package. With its fully
connected logic array and flexible macrocell structure, high gate utilization is easily
obtainable. The ATF2500C is a high-performance CMOS (electrically-erasable) pro-
grammable logic device (PLD) that utilizes Atmel’s proven electrically-erasable
technology.
ATF2500C
CPLD Family
Datasheet
ATF2500C
ATF2500CL
ATF2500CQ
ATF2500CQL
Preliminary
Rev. 0777G–12/01
Pin Configurations
Pin Name Function
IN Logic Inputs
CLK/IN Pin Clock and Input
I/O Bi-directional Buffers
I/O 0,2,4... “Even” I/O Buffers
I/O 1,3,5... “Odd” I/O Buffers
GND Ground
VCC +5V Supply
DIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
IN
IN
IN
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
VCC
I/O17
I/O16
I/O15
I/O14
I/O13
I/O12
IN
IN
IN
IN
IN
IN
IN
IN
I/O6
I/O7
I/O8
I/O9
I/O10
I/O11
GND
I/O23
I/O22
I/O21
I/O20
I/O19
I/O18
IN
IN
IN
PLCC/LCC/JLCC
7
8
9
10
11
12
13
14
15
16
17
39
38
37
36
35
34
33
32
31
30
29
I/O2
I/O3
I/O4
I/O5
VCC
VCC
I/O17
I/O16
I/O15
I/O14
I/O13
I/O7
I/O8
I/O9
I/O10
I/O11
GND
GND
I/O23
I/O22
I/O21
I/O20
6 5 4 3 2 1
44 43 42 41 40
18 19 20 21 22 23 24 25 26 27 28
I/O12
IN IN IN IN IN IN IN IN
I/O18 I/O19
I/O1 I/O0 GND IN IN CLK/IN IN IN IN IN I/O6
Note: For ATF2500CQ and ATF2500CQL
(PLCC/LCC/JLCC packages) pin 4 and pin 26
GND connections are not required.