TMP86xy49UG/F/NG Toshiba, TMP86xy49UG/F/NG Datasheet - Page 236
TMP86xy49UG/F/NG
Manufacturer Part Number
TMP86xy49UG/F/NG
Description
Manufacturer
Toshiba
Datasheet
1.TMP86XY49UGFNG.pdf
(263 pages)
Specifications of TMP86xy49UG/F/NG
Package
LQFP64/QFP64/SDIP64
Rom Types (m=mask,p=otp,f=flash)
M/P/F
Rom Size
16/32/60
Ram Size
512/1K/2K
Driver Led
13
Driver Lcd
-
Spi/sio Channels
2
Uart/sio Channels
2
I2c/sio Channels
1
High-speed Serial Output
-
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
4
Motor Channels
-
Watchdog Timer
Y
Dual Clock
Y
Clock Gear
-
Number Of I/o Ports
56
Power Supply (v)
4.5 to 5.5
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17.6 Precautions about AD Converter
17.6.1 Restrictions for AD Conversion interrupt (INTADC) usage
17.6.2 Analog input pin voltage range
17.6.3 Analog input shared pins
17.6.4 Noise Countermeasure
Figure 17-5
Permissible signal
source impedance
5 kΩ (max)
an INTADC interrupt request is generated while an interrupt with priority lower than the interrupt latch IL15
(INTADC) is being accepted, the INTADC interrupt latch may be cleared without the INTADC interrupt being
processed.
(EOCF) by software. This can be done by polling EOCF or monitoring EOCF at regular intervals after start of
AD conversion.
(EOCF) and interrupt latch IL15. If IL15 = 0 and EOCF = 1, call the AD conversion end interrupt processing
routine with consideration given to PUSH/POP operations. At this time, if an interrupt request with priority
higher than INTADC has been set, the AD conversion end interrupt processing routine will be executed first
against the specified priority. If necessary, we recommend that the AD conversion end interrupt processing rou-
tine be called after checking whether or not an interrupt request with priority higher than INTADC has been
set.
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.
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.
When an AD interrupt is used, it may not be processed depending on program composition. For example, if
The completion of AD conversion can be detected by the following methods:
(1) Method not using the AD conversion end interrupt
Whether or not AD conversion is completed can be detected by monitoring the AD conversion end flag
(2) Method for detecting AD conversion end while a lower-priority interrupt is being processed
While an interrupt with priority lower than INTADC is being processed, check the AD conversion end flag
Make sure the analog input pins (AIN0 to AIN15) are used at voltages within VAREF to VSS. If any voltage
The analog input pins (AIN0 to AIN15) 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 17-5. The higher the output
Note) i = 15 to 0
Analog Input Equivalent Circuit and Example of Input Pin Processing
AINi
Internal resistance
5 kΩ (typ)
Internal capacitance
Page 219
C = 12 pF (typ.)
Analog comparator
DA converter
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