TMPA901CMXBG Toshiba, TMPA901CMXBG Datasheet - Page 813

• Manufacturer Part Number: TMPA901CMXBG
• Description: Microcontrollers (MCU) 32-bit RISC MCU 16kb ARM926EJ 16kb 200Mhz
• Manufacturer: Toshiba

Specifications of TMPA901CMXBG

• Product Summaries: Summary
• Lead Free: Yes
• Rohs Compatible Product(s): Available
• Rom (kbytes): -
• Rom Type: ROMless
• Ram (kbytes): 32
• Number Of Pins: 177
• Package: BGA
• Vcc: 3V
• Tft Lcd Controller: Y
• Touchscreen Controller: Y
• Usb Host Fs With Phy: Y
• Usb Device Hs With Phy: Y
• Sd Host Controller: -
• Cmos Image Sensor Interface: -
• I2s: 1
• Ssp (ch) Spi: 1
• I2mc/sio (ch): 1
• Uart/sio (ch): 2
• External Bus Interface: Y
• Cs/wait Controller (ch): 4
• Dma Controller: 8
• 10-bit Ad Converter: 4
• 12-bit Da Converter: -
• 16-bit Timer / Counter: 6
• Real Time Clock: Y
• Watchdog Timer: Y
• Osc Freq Detect: Y
• Low-power Modes: Y
• Lead Free Status / Rohs Status: Details

TMPA901CM
3.26 OFD (Oscillation Frequency Detector)
3.26.1 Outline
The Oscillation Frequency Detector (OFD) generates a reset when the high-frequency
oscillation frequency (f
) falls or rises outside of the normal frequency range specified by
OSCH
the lower and higher detection frequency setting registers. When an abnormal frequency
condition is detected, it can be notified to an internal reset circuit. The high-frequency clock
(f
) is used as a detection clock, and the low-frequency clock (f
: 32 KHz) is used as a
OSCH
s
reference clock of the OFD. If the 32 kHz reference clock stops due to an external cause, etc.,
the OFD detects an abnormal condition and resets the internal circuitry.
Note: In the PCM mode, the OFD circuitry is not powered and is not operational. So stop the OFD operation
before the PCM execution.
TMPA901CM - 812
2010-07-29