ISPLSI1032-60LG/883 LATTICE [Lattice Semiconductor], ISPLSI1032-60LG/883 Datasheet - Page 10

• Manufacturer Part Number: ISPLSI1032-60LG/883
• Description: High-Density Programmable Logic
• Manufacturer: LATTICE [Lattice Semiconductor]

The ispLSI devices are the in-system programmable
versions of the Lattice Semiconductor High-Density pro-
grammable Large Scale Integration (pLSI) devices. By
integrating all the high voltage programming circuitry on-
chip, programming can be accomplished by simply shifting
data into the device. Once the function is programmed,
the non-volatile E
even when the power is turned off.
All necessary programming is done via five TTL level
logic interface signals. These five signals are fed into the
on-chip programming circuitry where a state machine
Figure 4. ISP Programming Interface
In-System Programmability
SDO
SDI
MODE
2
CMOS cells will not lose the pattern
SCLK
ispEN
ispEN
SCLK
MODE
SDI
ispLSI
5-wire ISP
Programming
Interface
SDO
Specifications ispLSI and pLSI 1032
SCLK
MODE
SDI
ispGAL
SDO
10
controls the programming. The interface signals are isp
Enable (ispEN), Serial Data In (SDI), Serial Data Out
(SDO), Serial Clock (SCLK) and Mode (MODE) control.
Figure 4 illustrates the block diagram of one possible
scheme for programming the ispLSI devices. For details
on the operation of the internal state machine and pro-
gramming of the device please refer to the ISP Architecture
and Programming section in this Data Book.
The device identifier for the ispLSI 1032 is 0000 0011
(03 hex). This code is the unique device identifier which
is generated when a read ID command is performed.
SCLK
MODE
SDI
ispGDS
SDO
ispEN
SCLK
MODE
SDI
ispLSI
SDO
1996 ISP Encyclopedia
0294B