PSD835G2-90U STMicroelectronics, PSD835G2-90U Datasheet - Page 31

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

Specifications of PSD835G2-90U

• 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: 497-2015

PSD835G2
Register bit definition
Memory_ID1 register
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
not used
not used
B_type 1
B_type 0
B_size 3
B_size 2
B_size 1
B_size 0
(set to ’0’)
(set to ’0’)
B_size[3:0] 0h = There is no secondary NVM
2h = Secondary NVM size is 256 Kbit
B_type[1:0] 0h = Secondary NVM is Flash memory
1h = Secondary NVM is EEPROM
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