M4A3-32/32-7VC LATTICE SEMICONDUCTOR, M4A3-32/32-7VC Datasheet - Page 6

• Manufacturer Part Number: M4A3-32/32-7VC
• Description: CPLD ispMACH™ 4A Family 1.25K Gates 32 Macro Cells 105MHz/125MHz EECMOS Technology 3.3V 44-Pin TQFP Tray
• Manufacturer: LATTICE SEMICONDUCTOR

Specifications of M4A3-32/32-7VC

• Package: 44TQFP
• Family Name: ispMACH™ 4A
• Device System Gates: 1250
• Maximum Propagation Delay Time: 7.5 ns
• Number Of User I/os: 32
• Typical Operating Supply Voltage: 3.3 V
• Maximum Operating Frequency: 105|125 MHz
• Number Of Product Terms Per Macro: 20
• Operating Temperature: 0 to 70 °C

The Macrocell-I/O cell ratio is defined as the number of macrocells versus the number of I/O cells
internally in a PAL block (Table 4).
The central switch matrix takes all dedicated inputs and signals from the input switch matrices and routes
them as needed to the PAL blocks. Feedback signals that return to the same PAL block still must go through
the central switch matrix. This mechanism ensures that PAL blocks in ispMACH 4A devices communicate
with each other with consistent, predictable delays.
The central switch matrix makes a ispMACH 4A device more advanced than simply several PAL devices on
a single chip. It allows the designer to think of the device not as a collection of blocks, but as a single
programmable device; the software partitions the design into PAL blocks through the central switch matrix
so that the designer does not have to be concerned with the internal architecture of the device.
Each PAL block consists of:
◆
◆
◆
◆
◆
◆
◆
Notes:
1. M4A3-64/64 internal switch matrix functionality embedded in central switch matrix.
6
Product-term array
Logic allocator
Macrocells
Output switch matrix
I/O cells
Input switch matrix
Clock generator
Macrocell-I/O Cell Ratio
Input Switch Matrix
Input Registers
Central Switch Matrix
Output Switch Matrix
Table 4. Architectural Summary of ispMACH 4A devices
M4A3-256/128, M4A5-256/128
M4A3-128/64, M4A5-128/64
M4A3-192/96, M4A5-192/96
M4A3-64/32, M4A5-64/32
M4A3-96/48, M4A5-96/48
ispMACH 4A Family
M4A3-384
M4A3-512
2:1
Yes
Yes
Yes
Yes
ispMACH 4A Devices
M4A3-256/160
M4A3-256/192
M4A3-32/32
M4A5-32/32
M4A3-64/64
Yes
1:1
Yes
Yes
No
1