PD780701Y_15 Datasheet, PDF (29/66 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD780701Y, 780702Y
4.5 A/D Converter
An A/D converter consisting of sixteen 8-bit resolution channels is incorporated.
The A/D converter has the following two functions.
• 8-bit resolution A/D conversion
• Power fail detection function
Figure 4-10. A/D Converter Block Diagram
ANI0/P80
ANI1/P81
ANI2/P82
ANI3/P83
ANI4/P84
ANI5/P85
ANI6/P86
ANI7/P87
ANI8/P90
ANI9/P91
ANI10/P92
ANI11/P93
ANI12/P94
ANI13/P95
ANI14/P96
ANI15/P97
Sample & hold circuit
Series resistor string
Voltage comparator
AVREF
(also used with analog
power supply)
Successive
approximation
register (SAR)
Control
circuit
A/D conversion result
register (ADCR3)
AVSS
INTAD
Internal bus
Figure 4-11. Block Diagram of Power Fail Detection Function
ANI0/P80
ANI1/P81
ANI2/P82
ANI3/P83
ANI4/P84
ANI5/P85
ANI6/P86
ANI7/P87
ANI8/P90
ANI9/P91
ANI10/P92
ANI11/P93
ANI12/P94
ANI13/P95
ANI14/P96
ANI15/P97
A/D converter
Comparator
INTAD
Power fail compare threshold
register 3 (PFT3)
Internal bus
Preliminary Product Information U13920EJ1V0PM00
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