ISPLSI1016EA LATTICE [Lattice Semiconductor], ISPLSI1016EA Datasheet - Page 2

• Manufacturer Part Number: ISPLSI1016EA
• Description: In-System Programmable High Density PLD
• Manufacturer: LATTICE [Lattice Semiconductor]

The device also has 32 I/O cells, each of which is directly
connected to an I/O pin. Each I/O cell can be individually
programmed to be a combinatorial input, registered
input, latched input, output or bi-directional
I/O pin with 3-state control. The signal levels are TTL
compatible voltages and the output drivers can source
2 mA or sink 8 mA. Each output can be programmed
independently for fast or slow output slew rate to mini-
mize overall output switching noise. By conneting the
VCCIO pin to a common 5V or 3.3V power supply, I/O
output levels can be matched to 5V or 3.3V-compatible
voltages.
Eight GLBs, 16 I/O cells, a dedicated input (if available)
and one ORP are connected together to make a
Megablock (see Figure 1). The outputs of the eight GLBs
are connected to a set of 16 universal I/O cells by the
ORP. Each ispLSI 1016EA device contains two
Megablocks.
The GRP has, as its inputs, the outputs from all of the
GLBs and all of the inputs from the bi-directional I/O cells.
All of these signals are made available to the inputs of the
GLBs. Delays through the GRP have been equalized to
minimize timing skew.
Figure 1. ispLSI 1016EA Functional Block Diagram
Functional Block Diagram
VCCIO
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
I/O 8
I/O 9
TDO
TMS
TCK
TDI
*Note: Y1 and RESET are multiplexed on the same pin
Megablock
Logic Blocks
Generic
(GLBs)
A1
A2
A3
A4
A5
A6
A7
A0
Routing
Global
(GRP)
Pool
2
Clocks in the ispLSI 1016EA device are selected using
the Clock Distribution Network. Two dedicated clock pins
(Y0 and Y1) are brought into the distribution network, and
five clock outputs (CLK 0, CLK 1, CLK 2, IOCLK 0 and
IOCLK 1) are provided to route clocks to the GLBs and
I/O cells. The Clock Distribution Network can also be
driven from a special clock GLB (B0 on the ispLSI
1016EA device). The logic of this GLB allows the user to
create an internal clock from a combination of internal
signals within the device.
Programmable Open-Drain Outputs
In addition to the standard output configuration, the
outputs of the ispLSI 1016EA are individually program-
mable, either as a standard totem-pole output or an
open-drain output. The totem-pole output drives the
specified Voh and Vol levels, whereas the open-drain
output drives only the specified Vol. The Voh level on the
open-drain output depends on the external loading and
pull-up. This output configuration is controlled by a pro-
grammable fuse. The default configuration when the
device is in bulk erased state is totem-pole configuration.
The open-drain/totem-pole option is selectable through
the ispDesignEXPERT software tools.
Specifications ispLSI 1016EA
Distribution
Network
B6
B5
B4
B3
B2
B1
B0
B7
Clock
CLK 0
CLK 1
CLK 2
IOCLK 0
IOCLK 1
0139/1016EA
GOE 0
I/O 31
I/O 30
I/O 29
I/O 28
I/O 27
I/O 26
I/O 25
I/O 24
I/O 23
I/O 22
I/O 21
I/O 20
I/O 19
I/O 18
I/O 17
I/O 16