PSD4235G2-90U STMicroelectronics, PSD4235G2-90U Datasheet - Page 28

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

Specifications of PSD4235G2-90U

• 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: 0°C ~ 70°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1968

Register bit definition
6
6.1
6.2
6.3
6.4
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Register bit definition
All the registers of the PSD are included here, for reference. Detailed descriptions of these
registers can be found in the following sections.
Data-In registers - port A, B, C, D, E, F, G
Read Port pin status when Port is in MCU I/O input mode.
Read-only registers.
Table 7.
Data-out registers - port A, B, C, D, E, F, G
Latched data for output to Port pin when pin is configured in MCU I/O output mode.
Table 8.
Direction registers - ports A, B, C, D, E, F, G
Table 9.
Port pin <i>:
Control registers
Table 10.
Port pin <i>:
Bit 7
Port pin 7
Bit 7
Port pin 7
Bit 7
Port pin 7
Bit 7
Port pin 7
0: Port pin <i> is configured in input mode (default).
1: Port pin <i> is configured in output mode.
0: Port pin <i> is configured in MCU I/O mode (default).
1: Port pin <i> is configured in Latched Address Out mode.
Bit 6
Port pin 6
Bit 6
Port pin 6
Bit 6
Port pin 6
Bit 6
Port pin 6
Data-In registers - Ports A, B, C, D, E, F, G
Data-Out registers - Ports A, B, C, D, E, F, G
Direction registers - Ports A, B, C, D, E, F, G
Control registers - Ports E, F, G
Bit 5
Port pin 5
Bit 5
Port pin 5
Bit 5
Port pin 5
Bit 5
Port pin 5
Bit 4
Port pin 4
Bit 4
Port pin 4
Bit 4
Port pin 4
Bit 4
Port pin 4
Bit 3
Port pin 3
Bit 3
Port pin 3
Bit 3
Port pin 3
Bit 3
Port pin 3
Bit 2
Port pin 2
Bit 2
Port pin 2
Bit 2
Port pin 2
Bit 2
Port pin 2
Bit 1
Port pin 1
Bit 1
Port pin 1
Bit 1
Port pin 1
Bit 1
Port pin 1
PSD4235G2
Bit 0
Port pin 0
Bit 0
Port pin 0
Bit 0
Port pin 0
Bit 0
Port pin 0