PSD4235G2-70U STMicroelectronics, PSD4235G2-70U Datasheet - Page 33
![no-image](/images/manufacturer_photos/0/6/637/stmicroelectronics_sml.jpg)
PSD4235G2-70U
Manufacturer Part Number
PSD4235G2-70U
Description
IC FLASH 4MBIT 70NS 80TQFP
Manufacturer
STMicroelectronics
Datasheet
1.PSD4235G2-70U.pdf
(129 pages)
Specifications of PSD4235G2-70U
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
4M (512K x 8)
Speed
70ns
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
497-1967
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PSD4235G2-70U
Manufacturer:
ST
Quantity:
210
Company:
Part Number:
PSD4235G2-70U
Manufacturer:
STMicroelectronics
Quantity:
10 000
PSD4235G2
6.17
PLD Array WRH
VM register
Table 25.
On reset, bit1-Bit4 are loaded to configurations that are selected by the user in PSDsoft
Express. bit0 and bit7 are always cleared on reset. bit0-Bit4 are active only when the device
is configured in Philips 80C51XA mode.
SR_code
Boot_code
FL_code
Boot_data
FL_data
Peripheral mode
Bit 7
Peripheral
mode
0: WRH/DBE input to the PLD AND array is connected.
1: WRH/DBE input to the PLD AND array is disconnected, saving power.
0 = PSEN cannot access SRAM in 80C51XA modes.
1 = PSEN can access SRAM in 80C51XA modes.
0 = PSEN cannot access Secondary NVM in 80C51XA modes.
1 = PSEN can access Secondary NVM in 80C51XA modes.
0 = PSEN cannot access Primary Flash memory in 80C51XA modes.
1 = PSEN can access Primary Flash memory in 80C51XA modes.
0 = RD cannot access Secondary NVM in 80C51XA modes.
1 = RD can access Secondary NVM in 80C51XA modes.
0 = RD cannot access Primary Flash memory in 80C51XA modes.
1 = RD can access Primary Flash memory in 80C51XA modes.
0 = Peripheral mode of Port F is disabled.
1 = Peripheral mode of Port F is enabled.
Bit 6
not used
(set to ’0’)
VM register
Bit 5
not used
(set to ’0’)
Bit 4
FL_data
Bit 3
Boot_data FL_code
Bit 2
Register bit definition
Bit 1
Boot_code SR_code
Bit 0
33/129