UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 260

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

(6) ANI0 to ANI7 pins
(7) AV
(8) AV
(9) AV
(10) ADTRG pin
258
These are eight analog input pins to input analog signals to undergo A/D conversion to the A/D converter. ANI0
to ANI7 are alternate-function pins that can also be used for digital input.
Cautions 1. Use ANI0 to ANI7 input voltages within the specification range. If a voltage higher than
This pin inputs the A/D converter reference voltage.
It converts signals input to ANI0 to ANI7 into digital signals according to the voltage applied between AV
AV
Caution
This is the ground potential pin of the A/D converter. Always keep it at the same potential as the V
pin even when not using the A/D converter.
This is the A/D converter analog power supply pin. Always keep it at the same potential as the V
even when not using the A/D converter.
This pin is a pin used to start the A/D converter by hardware.
SS
REF
SS
DD
.
pin
pin
pin
2. Analog input (ANI0 to ANI7) pins are alternate function pins that can also be used as input
3. When a digital pulse is applied to a pin adjacent to the pin in the process of A/D conversion,
A series resistor string of several 10 k
Therefore, when the output impedance of the reference voltage is too high, it seems as if the
AV
reference voltage error.
CHAPTER 13 8-BIT A/D CONVERTER ( PD780024A, 780024AY SUBSERIES)
AV
conversion value of that channel will be undefined and the conversion values of other
channels may also be affected.
port (P10 to P17) pins. When A/D conversion is performed by selecting any one of ANI0
to ANI7, do not access port 1 during conversion. It may cause the lower conversion
resolution.
A/D conversion values may not be obtained as expected due to coupling noise. Thus, do
not apply any pulse to a pin adjacent to the pin in the process of A/D conversion.
REF
REF
pin and the series resistor string are connected in series. This may cause a greater
or lower than AV
SS
User’s Manual U14046EJ5V0UD
is applied (even if within the absolute maximum rating range), the
is connected between the AV
REF
pin and AV
DD0
or V
SS0
REF
or V
SS
DD1
pin.
and
pin
SS1