ATF1502AS ATMEL [ATMEL Corporation], ATF1502AS Datasheet - Page 2

• Manufacturer Part Number: ATF1502AS
• Description: High Performance E2PROM CPLD
• Manufacturer: ATMEL [ATMEL Corporation]

Description
The ATF1502AS is a high performance, high density Com-
plex Programmable Logic Device (CPLD) which utilizes
Atmel’s proven electrically erasable technology. With 32
logic macrocells and up to 36 inputs, it easily integrates
logic from several TTL, SSI,MSI, LSI and classic PLDs.
The ATF1502AS’s enhanced routing switch matrices
increase usable gate count, and the odds of successful pin-
locked design modifications.
Block Diagram
Each of the 32 macrocells generates a buried feedback,
which goes to the global bus. Each input and I/O pin also
2
TMS/I/O
PD1/I/O
I/O/TDI
GND
VCC
I/O
I/O
I/O
I/O
I/O
I/O
1
2
3
4
5
6
7
8
9
10
11
44-Lead TQFP/PQFP
ATF1502AS
Top View
32
33
32
31
30
29
28
27
26
25
24
23
I/O
I/O/TDO
I/O
I/O
VCC
I/O
I/O
I/O/TCK
I/O
GND
I/O
The ATF1502AS has up to 32 bi-directional I/O pins and 4
dedicated input pins, depending on the type of device pack-
age selected. Each dedicated pin can also serve as a glo-
bal control signal; register clock, register reset or output
enable. Each of these control signals can be selected for
use individually within each macrocell.
feeds into the global bus. The switch matrix in each logic
block then selects 40 individual signals from the global bus.
I/O/TMS
PD1/I/O
TDI/I/O
GND
VCC
I/O
I/O
I/O
I/O
I/O
I/O
7
8
9
10
11
12
13
14
15
16
17
B
44-Lead PLCC
Top View
39
38
37
36
35
34
33
32
31
30
29
I/O
I/O/TDO
I/O
I/O
VCC
I/O
I/O
I/O/TCK
I/O
GND
I/O