TMP91xy20AFG Toshiba, TMP91xy20AFG Datasheet - Page 29

• Manufacturer Part Number: TMP91xy20AFG
• Manufacturer: Toshiba

Specifications of TMP91xy20AFG

• Package: LQFP144
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): M
• Rom Combinations: 8
• Ram Combinations: 8
• Architecture: 16-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 1
• I2c/sio Bus Channels: 1
• (s)dram Controller: 1
• Adc 10-bit Channel: 8
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: 1
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 77
• Power Supply Voltage(v): 3.0 to 3.6

3.3.6
Noise Reduction Circuits
(1) Reduced drivability for high-frequency oscillator
(2) Reduced drivability for low-frequency oscillator
(3) Single drive for high-frequency oscillator
(4) Runaway provision with SFR protection register
(5) Runaway provision with ROM protection register
to EMCCR3 registers.
(1) Reduced drivability for high-frequency oscillator
Noise reduction circuits are built in, allowing implementation of the following features.
The above functions are performed by making the appropriate settings in the EMCCR0
register. By reset, <DRVOSCH> is initialized to 1 and the oscillator starts oscillation
by normal drivability when the power supply is on.
Resonator
(Purpose)
Reduces noise and power for oscillator when a resonator is used.
(Block diagram)
C1
C2
(Setting method)
The drivability of the oscillator is reduced by writing 0 to EMCCR0<DRVOSCH>
X1 pin
X2 pin
91C820A-27
Enable oscillation (STOP + EMCCR0<EXTIN>)
EMCCR0<DRVOSCH>
f
OSCH
TMP91C820A
2008-02-20