TMPM380FWDFG Toshiba, TMPM380FWDFG Datasheet - Page 595

• Manufacturer Part Number: TMPM380FWDFG
• Manufacturer: Toshiba

Specifications of TMPM380FWDFG

• Product Summaries: Summary
• Lead Free: Yes
• Rohs Compatible Product(s): Available
• Rom (kbytes): 128K
• Rom Type: Flash
• Ram (kbytes): 12K
• Number Of Pins: 100
• Package: QFP(14×20)
• Vcc: 5V
• Cpu Mhz: 40
• Ssp (ch) Spi: 2
• I2c/sio (ch): 2
• Uart/sio (ch): 5
• Usb: -
• Can: -
• Ethernet: -
• External Bus Interface: N
• Cs/wait Controller (ch): -
• Dma Controller: 2
• 10-bit Da Converter: -
• 10-bit Ad Converter: -
• 12-bit Ad Converter: 18
• 16-bit Timer / Counter: 8
• Motor / Igbt Control: Y
• Real Time Clock: 1
• Watchdog Timer: Y
• Osc Freq Detect: Y
• Clock Gear: Y
• Low-power Hold Function: -
• Remote Control Interface: Y
• Hardware Cec Controller: -
• Comparators: -
• Low-voltage Detector: Y
• Etm Hardware Trace: 2-bit

23 Flash Memory Operation
8)
Checksum Calculation
The checksum byte for a series of bytes of data is calculated by adding the bytes together, dropping
the carries, and taking the two’s complement of the total sum. The controller must perform the same
checksum operation in transmitting checksum bytes.
Example) Assume the upper and lower bytes of the sum as 0xE5 and 0xF6. To calculate the
checksum for a series of 0xE5 and 0xF6:
Add the bytes together
Take the two’s complement of the sum, and that is the checksum byte.
0xE5 + 0xF6 = 0x1DB
0 − 0xDB = 0x25
Password area error
Are all bytes the
equal to 0xFF?
Are all bytes
same?
Start
Fig 23-9 Password Area Verification Flow
YES
TMPM380/M382 - 34 / 54 -
YES
Password area is normal.
TMPM380/M382