PSD4235G2-90U STMicroelectronics, PSD4235G2-90U Datasheet - Page 30

• 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
6.9
6.10
6.11
30/129
Output macrocells A/B registers
Write register: Load MCellA7-MCellA0/MCellB7-MCellB0 with 0 or 1.
Read register: Read MCellA7-MCellA0/MCellB7-MCellB0 output status.
Table 15.
Table 16.
Mask macrocells A/B registers
Table 17.
Table 18.
McellA<i>_Prot:
Flash Memory Protection register
Read-only register
Table 19.
Sec<i>_Prot:
Bit 7
Mcella 7
Bit 7
Mcellb 7
Bit 7
Mcella 7
Bit 7
Mcellb 7
Bit 7
Sec7_Prot Sec6_Prot Sec5_Prot Sec4_Prot Sec3_Prot Sec2_Prot Sec1_Prot Sec0_Prot
0: Allow MCellA<i>/MCellB<i> flip-flop to be loaded by MCU (default).
1: Prevent MCellA<i>/MCellB<i> flip-flop from being loaded by MCU.
1: Primary Flash memory Sector <i> is write protected.
0: Primary Flash memory Sector <i> is not write protected.
Bit 6
Mcella 6
Bit 6
Mcellb 6
Bit 6
Mcella 6
Bit 6
Mcellb 6
Bit 6
Output macrocells A register
Output macrocells B register
Mask macrocells A register
Mask macrocells B register
Flash Memory Protection register
Bit 5
Mcellb 5
Bit 5
Mcellb 5
Bit 5
Mcella 5
Bit 5
Mcella 5
Bit 5
Bit 4
Mcellb 4
Bit 4
Mcellb 4
Bit 4
Mcella 4
Bit 4
Mcella 4
Bit 4
Bit 3
Mcellb 3
Bit 3
Mcellb 3
Bit 3
Mcella 3
Bit 3
Mcella 3
Bit 3
Bit 2
Mcella 2
Bit 2
Mcellb 2
Bit 2
Mcella 2
Bit 2
Mcellb 2
Bit 2
Bit 1
Mcellb 1
Bit 1
Mcellb 1
Bit 1
Mcella 1
Bit 1
Mcella 1
Bit 1
PSD4235G2
Bit 0
Mcellb 0
Bit 0
Mcellb 0
Bit 0
Mcella 0
Bit 0
Mcella 0
Bit 0