UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 728

• Manufacturer Part Number: UPD70F3786GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3-E 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Er

Specifications of UPD70F3786GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, CSI, EBI/EMI, Ethernet, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 100
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 124K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

15.6 Cautions
726
(1) When A/D converter is not used
(2) Input range of ANIn pins
(3) Countermeasures against noise
(4) Alternate I/O
When the A/D converter is not used, the power consumption can be reduced by clearing the ADA0M0.ADA0CE
bit to 0.
Input the voltage within the specified range to the ANIn pins. If a voltage equal to or higher than AV
equal to or lower than AV
pins, the conversion value of that channel is undefined, and the conversion value of the other channels may
also be affected.
To maintain the 10-bit resolution, the ANIn pins must be effectively protected from noise. The effect of noise
increases as the output impedance of the analog input source becomes higher. To lower the noise, connecting
an external capacitor as shown in Figure 15-12 is recommended.
The analog input pins (ANIn) function alternately as port pins. When selecting one of the ANIn pins to execute
A/D conversion, do not execute an instruction to read an input port or write to an output port during conversion
as the conversion resolution may drop.
Also the conversion resolution may drop at the pins set as output port pins during A/D conversion if the output
current fluctuates due to the effect of the external circuit connected to the port pins.
If a digital pulse is applied to a pin adjacent to the pin whose input signal is being converted, the A/D
conversion value may not be as expected due to the effect of coupling noise. Therefore, do not apply a pulse
to a pin adjacent to the pin undergoing A/D conversion.
SS
Figure 15-12. Processing of Analog Input Pin
(even within the range of the absolute maximum ratings) is input to any of these
CHAPTER 15 A/D CONVERTER
User’s Manual U19601EJ2V0UD
Clamp with a diode with a low V
if noise equal to or higher than AV
to or lower than AV
ANIn
V
AV
AV
V
DD
SS
REF0
SS
SS
may be generated.
F
(0.3 V or less)
REF0
or equal
REF0
or