UPSD3433E-40T6 STMicroelectronics, UPSD3433E-40T6 Datasheet - Page 211

• Manufacturer Part Number: UPSD3433E-40T6
• Description: MCU 8BIT 8032 128KB FLASH 52TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3433E-40T6

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-TQFP, 52-VQFP
• For Use With: 497-5518 - EVAL BOARD RFID READER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-4906

UPSD3422, UPSD3433, UPSD3434, UPSD3454
28.5.7
28.5.8
The correct select signal, FSx or CSBOOTx, must be active during the entire polling
procedure.
Polling may also be used to indicate when an erase operation has completed. During an
erase operation, DQ7 is '0.' After the erase is complete DQ7 is '1.' The correct select signal,
FSx or CSBOOTx, must be active during the entire polling procedure.
DQ7 is valid after the fourth instruction byte WRITE operation (for program instruction
sequence) or after the sixth instruction byte WRITE operation (for erase instruction
sequence).
If all Flash memory sectors to be erased are protected, DQ7 is reset to ’0’ for about 100µs,
and then DQ7 returns to the value of D7 of the previously addressed byte. No erasure is
performed.
Toggle flag (DQ6)
The Flash memories offer an alternate way to determine when a Flash memory program
operation has completed. During the program operation and while the correct sector select
FSx or CSBOOTx is active, the Toggle Flag Bit (DQ6) toggles from '0' to '1' and '1' to ’0’ on
subsequent attempts to read any byte of the same Flash array.
When the internal program operation is complete, the toggling stops and the data read on
the data bus D0-7 is the actual value of the addressed memory byte. The device is now
accessible for a new READ or WRITE operation. The operation is finished when two
successive READs yield the same value for DQ6.
DQ6 may also be used to indicate when an erase operation has completed. During an erase
operation, DQ6 will toggle from '0' to '1' and '1' to ’0’ until the erase operation is complete,
then DQ6 stops toggling. The erase is finished when two successive READs yield the same
value of DQ6. The correct sector select signal, FSx or CSBOOTx, must be active during the
entire procedure.
DQ6 is valid after the fourth instruction byte WRITE operation (for program instruction
sequence) or after the sixth instruction byte WRITE operation (for erase instruction
sequence).
If all the Flash memory sectors selected for erasure are protected, DQ6 toggles to ’0’ for
about 100µs, then returns value of D6 of the previously addressed byte.
Error flag (DQ5)
During a normal program or erase operation, the Error Flag Bit (DQ5) is to ’0’. This bit is set
to ’1’ when there is a failure during Flash memory byte program, sector erase, or bulk erase
operations.
In the case of Flash memory programming, DQ5 Bit indicates an attempt to program a Flash
memory bit from the programmed state of '0,' to the erased state of 1, which is not valid.
DQ5 may also indicate a particular Flash cell is damaged and cannot be programmed.
In case of an error in a Flash memory sector erase or byte program operation, the Flash
memory sector in which the error occurred or to which the programmed byte belongs must
no longer be used. Other Flash memory sectors may still be used. DQ5 is reset after a
Reset Flash instruction sequence.
PSD module
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