UPSD3422E-40U6 STMicroelectronics, UPSD3422E-40U6 Datasheet - Page 217

• Manufacturer Part Number: UPSD3422E-40U6
• Description: MCU 8BIT 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3422E-40U6

• 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: 46
• Program Memory Size: 80KB (80K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 80-TQFP, 80-VQFP
• For Use With: 497-5577 - BOARD EVAL USB POWER SWITCH497-5518 - EVAL BOARD RFID READER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-4903

UPSD3422, UPSD3433, UPSD3434, UPSD3454
28.5.18
28.5.19
The Erase Time-out Flag Bit (DQ3) reflects the time-out period allowed between two
consecutive sector erase instruction sequence bytes. If multiple sector erase commands are
desired, the additional sector erase commands (30h) must be sent by the 8032 to another
sector within 80µs after the previous sector erase command. DQ3 is 0 before this time
period has expired, indicating it is OK to issue additional sector erase commands. DQ3 will
go to logic ’1’ if the time has been longer than 80µs since the previous sector erase
command (time has expired), indicating that is not OK to send another sector erase
command. In this case, the 8032 must start a new sector erase instruction sequence (unlock
and command), beginning again after the current sector erase operation has completed.
During a Sector Erase operation, the memory status may be checked by reading the Error
Flag Bit (DQ5), the Toggle Flag Bit (DQ6), and the Data Polling Flag Bit (DQ7), as detailed in
Section 28.5.5: Reading the erase/program status bits on page
During a Sector Erase operation, a Flash memory accepts only Reset Flash and Suspend
Sector Erase instruction sequences. Erasure of one Flash memory sector may be
suspended, in order to read data from another Flash memory sector, and then resumed.
The address provided with the initial Flash Sector Erase command sequence
page
sector erase commands that are appended within the time-out period must be addressed to
other desired segments within the same Flash memory array.
Suspend sector erase
When a Sector Erase operation is in progress, the Suspend Sector Erase instruction
sequence can be used to suspend the operation by writing B0h to any valid address within
the Flash array that currently is undergoing an erase operation. This allows reading of data
from a different Flash memory sector within the same array after the Erase operation has
been suspended. Suspend Sector Erase is accepted only during an Erase operation.
There is up to 15µs delay after the Suspend Sector Erase command is accepted and the
array goes to Read Array mode. The 8032 will monitor the Toggle Flag Bit (DQ6) to
determine when the erase operation has halted and Read Array mode is active.
If a Suspend Sector Erase instruction sequence was executed, the following rules apply:
●
●
●
●
Resume sector erase
If a Suspend Sector Erase instruction sequence was previously executed, the erase cycle
may be resumed with this instruction sequence. The Resume Sector Erase instruction
sequence consists of writing the command 30h to any valid address within the Flash array
that was suspended as shown in
Attempting to read from a Flash memory sector that was being erased outputs invalid
data.
Reading from a Flash memory sector that was not being erased is valid.
The Flash memory cannot be programmed, and only responds to Resume Sector
Erase and Reset Flash instruction sequences.
If a Reset Flash instruction sequence is received, data in the Flash memory sector that
was being erased is invalid.
209) must select the first desired sector (FSx or CSBOOTx) to erase. Subsequent
Table 163 on page
209.
210.
(Table 163 on
PSD module
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