TMP86xy46NG Toshiba, TMP86xy46NG Datasheet - Page 148
TMP86xy46NG
Manufacturer Part Number
TMP86xy46NG
Description
Manufacturer
Toshiba
Datasheet
1.TMP86XY46NG.pdf
(171 pages)
Specifications of TMP86xy46NG
Package
SDIP42
Rom Types (m=mask,p=otp,f=flash)
M/P/F
Rom Size
8/16/32
Ram Size
512/512/1K
Driver Led
19
Driver Lcd
-
Spi/sio Channels
1
Uart/sio Channels
1
I2c/sio Channels
-
High-speed Serial Output
-
Adc 8-bit Channels
-
Adc 10-bit Channels
8
Da Converter Channels
-
Timer Counter 18-bit Channel
-
Timer Counter 16-bit Channel
1
Timer Counter 8-bit Channel
2
Motor Channels
-
Watchdog Timer
Y
Dual Clock
Y
Clock Gear
-
Number Of I/o Ports
33
Power Supply (v)
4.5 to 5.5
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12.6 Precautions about AD Converter
12.6.1 Analog input pin voltage range
12.6.2 Analog input shared pins
12.6.3 Noise Countermeasure
Figure 12-5
Permissible signal
source impedance
5 kΩ (max)
age outside this range is applied to one of the analog input pins, the converted value on that pin becomes uncer-
tain. The other analog input pins also are affected by that.
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.
impedance of the analog input source, more easily they are susceptible to noise. Therefore, make sure the out-
put impedance of the signal source in your design is 5 kΩ or less. Toshiba also recommends attaching a capac-
itor external to the chip.
Make sure the analog input pins (AIN0 to AIN7) are used at voltages within VAREF to AVSS. If any volt-
The analog input pins (AIN0 to AIN7) are shared with input/output ports. When using any of the analog
The internal equivalent circuit of the analog input pins is shown in Figure 12-5. The higher the output
Note) i = 7 to 0
Analog Input Equivalent Circuit and Example of Input Pin Processing
AINi
Internal resistance
5 kΩ (typ)
Internal capacitance
Page 137
C = 12 pF (typ.)
Analog comparator
DA converter
TMP86PM46NG
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