PSD4235G2-90UI STMicroelectronics, PSD4235G2-90UI Datasheet - Page 19

• Manufacturer Part Number: PSD4235G2-90UI
• Description: IC FLASH 4MBIT 90NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD4235G2-90UI

• 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: 497-1969

PSD4235G2
Table 2.
PE7
PF0-PF7
PG0-PG7
V
GND
Pin name
CC
78
31-38
21-28
9, 29,
69
8, 30,
49,
50, 70
Pin description (for the LQFP package) (continued)
Pin
I/O
CMOS
or
Open
Drain
I/O
CMOS
or
Open
Drain
I/O
CMOS
or
Open
Drain
Type
PE7 pin of Port E. This port pin can be configured to have the following functions:
1. MCU I/O - standard output or input port.
2. Latched address output.
These pins make up Port F. These port pins are configurable and can have the
following functions:
1. MCU I/O - standard output or input port.
2. External Chip Select (ECS0-ECS7) outputs, or inputs to CPLD.
3. Latched address outputs.
4. Address A1-A3 inputs in 80C51XA mode (PF0 is grounded)
5. Data bus port (D0-D7) in a non-multiplexed bus configuration.
6. Peripheral I/O mode.
7. MCU reset mode.
These pins make up Port G. These port pins are configurable and can have the
following functions:
1. MCU I/O - standard output or input port.
2. Latched address outputs.
3. Data bus port (D8-D15) in a non-multiplexed bus configuration.
4. MCU reset mode.
Supply voltage
Ground pins
Description
Pin description
19/129