PSD835G2-90UI STMicroelectronics, PSD835G2-90UI Datasheet - Page 65

• Manufacturer Part Number: PSD835G2-90UI
• Description: IC FLASH 4MBIT 90NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD835G2-90UI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 4M (512K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2016

PSD835G2
15.10
Figure 18. External Chip Select
External chip
The CPLD also provides eight Chip Select outputs that can be used to select external
devices. The Chip Selects can be routed to either port C or port F, depending on the pin
declaration in the PSDsoft. Each Chip Select (ECS0-ECS7) consists of one product term
that can be configured active high or low.
The Output Enable of the pin is controlled by either the Output Enable product term or the
Direction register (see
ECS PT
POLARITY
BIT
Figure
ENABLE (.OE) PT
18).
PORT C OR F
ECS TO
PORT C OR PORT F
DIRECTION
REGISTER
PD0 PIN
AI07654
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PLDs