TMPM382FSFG Toshiba, TMPM382FSFG Datasheet - Page 518

• Manufacturer Part Number: TMPM382FSFG
• Manufacturer: Toshiba

Specifications of TMPM382FSFG

• Product Summaries: Summary
• Lead Free: Yes
• Rohs Compatible Product(s): Available
• Rom (kbytes): 64K
• Rom Type: Flash
• Ram (kbytes): 8K
• Number Of Pins: 64
• Package: QFP(14x14)
• Vcc: 5V
• Cpu Mhz: 40
• Ssp (ch) Spi: 1
• I2c/sio (ch): 1
• Uart/sio (ch): 3
• 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: 10
• 16-bit Timer / Counter: 6
• 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

19 Ocsillation Frequency Detector (OFD)
19.1 Brief overview
frequency for CPU clock exceeds the detection frequency range.(Note)
only external OSC clock frequency using internal OSC clock.
all defects at any time. Therefore please design the system carefully assuming there is some possibility that OFD
circuit will not work correctly.
The oscillation frequency detector circuit generates a reset for micro if the external oscillation of high
The following is the operation flow how to use OFD.
TMPM380 can be operated by both internal OSC and external OSC, however OFD circuit can detect
Note) OFD circuit is designed for detecting abnormal oscillation however it is not guaranteed that OFD can detect
Figure 19-1 Oscillation Frequency Detector Circuit Operation Flow
Detect abnormal External oscillation
Switch to external oscillation
Start external oscillation
External oscillator is normal?
Start internal oscillation
（Flag check⇒Clear）
OFD circuit operation
OFD detection period
Check RESET factor
OFDRST disable
OFDRST enable
（Period＊２）
OFDBUSY=1
FRQERR=0
Warm-up
Reset
Reset generation
Yes
Release reset
TMPM380/382 - 1 / 12 -
OFD detection period（period）：about 26us
※ Refer RESET flag of
chapter ‘‘Exception’’
No
Error operation
.
TMPM380/382