PSD4235G2-90UI STMicroelectronics, PSD4235G2-90UI Datasheet - Page 34

• 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

Register bit definition
6.18
6.19
34/129
Memory_ID0 registers
Table 26.
F_size[3:0]
S_size[3:0]
Memory_ID1 register
Table 27.
B_size[3:0]
B_type[1:0]
Bit 7
S_size 3
Bit 7
not used
(set to ’0’)
0h = There is no Primary Flash memory
1h: Primary Flash memory size is 256 Kbit
2h: Primary Flash memory size is 512 Kbit
3h = Primary Flash memory size is 1 Mbit
4h = Primary Flash memory size is 2 Mbit
5h = Primary Flash memory size is 4 Mbit
6h = Primary Flash memory size is 8 Mbit
0h = There is no SRAM
1h = SRAM size is 16 Kbit
2h = SRAM size is 32 Kbit
3h = SRAM size is 64 Kbit
4h = SRAM size is 128 Kbit
5h = SRAM size is 256 Kbit
0h = There is no Secondary NVM
1h = Secondary NVM size is 128 Kbit
2h = Secondary NVM size is 256 Kbit
3h = Secondary NVM size is 512 Kbit
0h = Secondary NVM is Flash memory
1h = Secondary NVM is EEPROM
Bit 6
not used
(set to ’0’)
Bit 6
S_size 2
Memory_ID0 register
Memory_ID1 register
Bit 5
S_size 1
Bit 5
B_type 1
Bit 4
B_type 0
Bit 4
S_size 0
Bit 3
B_size 3
Bit 3
F_size 3
Bit 2
B_size 2
Bit 2
F_size 2
Bit 1
B_size 1
Bit 1
F_size 1
PSD4235G2
Bit 0
B_size 0
Bit 0
F_size 0