TMP86xy48UG/FG Toshiba, TMP86xy48UG/FG Datasheet - Page 152

• Manufacturer Part Number: TMP86xy48UG/FG
• Manufacturer: Toshiba

Specifications of TMP86xy48UG/FG

• Package: LQFP64/QFP64
• Rom Types (m=mask,p=otp,f=flash): F/E
• Rom Size: 32
• Ram Size: 2K
• Driver Led: 11
• Driver Lcd: -
• Spi/sio Channels: 1
• Uart/sio Channels: 1
• I2c/sio Channels: 1
• High-speed Serial Output: 2
• Adc 8-bit Channels: -
• Adc 10-bit Channels: 16
• Da Converter Channels: -
• Timer Counter 18-bit Channel: -
• Timer Counter 16-bit Channel: 2
• Timer Counter 8-bit Channel: 2
• Motor Channels: -
• Watchdog Timer: Y
• Dual Clock: Y
• Clock Gear: -
• Number Of I/o Ports: 54
• Power Supply (v): 2.7 to 3.6

2.15.7 Precautions about AD Converter
Figure 2.15.7 Analog Input Equivalent Circuit and Example of Input Pin Processing
(1) Analog input pin voltage range
(2) Analog input shared pins
(3) Noise countermeasure
Allowable signal
5 kΩ (Max)
source impedance
below VAREF. If any voltage outside this range is applied to one of the analog input
pins, the converted value on that pin becomes uncertain. The other analog input pins
also are affected by that.
using any of the analog inputs to execute AD conversion, do not execute input/output
instructions for all other ports. This is necessary to prevent the accuracy of AD
conversion from degrading. Not only these analog input shared pins, some other pins
may also be affected by noise arising from input/output to and from adjacent pins.
The higher the output impedance of the analog input source, more easily they are
susceptible to noise. Therefore, make sure the output impedance of the signal source in
your design is 5 kΩ or less. Toshiba also recommends attaching a capacitor external to
the chip.
Make sure the analog input pins (AIN00 to AIN17) are used at voltages within VSS
The analog input pins (AIN00 to AIN17) are shared with input/output ports. When
The internal equivalent circuit of the analog input pins is shown in Figure 2.15.7.
AINi
86FM48-148
Internal resistance
R = 5 kΩ (Typ.)
Internal capacitance
C = 22 pF (Typ.)
DA converter
Analog comparator
Note: i = 00 to 17
TMP86FM48
2007-08-24