tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 460

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

17. Analog/Digital Converter
Analog/Digital Converter
AINA0 (P70)
AINA3(P73)
AINA2(P72)
AINA1(P71)
A 10-bit, sequential-conversion analog/digital converter (A/D converter) is built into the TMP19A44. This A/D
converter is equipped with 16 analog input channels, which are divided into three units (4 channels, 4 channels
and 8 channels).
Fig. 17.1 shows the block diagram of this A/D converter.
These 16 analog input channels (pins ANA0 through AINA3, ANB0 through AINB3 and ANC0 through
AINC8) are also used as input ports.
(Note)
VREFH
VREFL
Fig. 17.1 Block Diagram of A/D Converter Unit A (the same applies to Unit B and C)
If it is necessary to reduce a power current by operating the TMP19A44 in IDLE,
SLEEP, SLOW, STOP or BACKUP mode and if either case shown below is applicable,
you must first stop the A/D converter and then execute the instruction to put the
TMP19A44 into standby mode:
1)
2)
Channel select
The TMP19A44 must be put into IDLE mode when ADMOD1<I2AD> is "0."
The TMP19A44 must be put into SLEEP,SLOW,STOP,BACKUP SLEEP,
control circuit
ADAMOD1
BACKUP STOP mode.
Internal data bus
VREF
ADSCNA
Sample
conversion control
hold
ADAMOD0
end
ADS
Normal A/D
circuit
TMP19A44(rev1.3) 17-1
busy
Comparator
+
−
scan
repeat
Interval
interrupt
D/A converter
ADAMOD2
Internal data bus
conversion control
High-priority AD
End
AD conversion
result register
ADREGSPA
AD conversion
Busy
result register
ADAREG0~3
ADAREG0~3
AD monitor function
ADAMOD3
ADAMOD5
start
Top-priority AD conversion
completion interrupt
HPADCE
Interrupt request INTAD
AD start control
Internal data bus
AD monitor function
ADAMOD4
interrupt
TMP19A44
TB0/CTRG
ADTRGA(PD6)
2010-04-01