UPD78F0138HGK-9ET-A Renesas Electronics America, UPD78F0138HGK-9ET-A Datasheet - Page 262

• Manufacturer Part Number: UPD78F0138HGK-9ET-A
• Description: MCU 8BIT 60K FLASH 64TQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx1+r

Specifications of UPD78F0138HGK-9ET-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: 3-Wire SIO, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 42
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

(2) Power-fail detection function (when PFEN = 1)
260
By setting bit 7 (ADCS) of the A/D converter mode register (ADM) to 1 and bit 7 (PFEN) of the power-fail
comparison mode register (PFM) to 1, the A/D conversion operation of the voltage applied to the analog input pin
specified by the analog input channel specification register (ADS) is started.
When the A/D conversion has been completed, the result of the A/D conversion is stored in the A/D conversion
result register (ADCR), the values are compared with power-fail comparison threshold register (PFT), and an
interrupt request signal (INTAD) is generated under the condition specified by bit 6 (PFCM) of PFM.
<1> When PFEN = 1 and PFCM = 0
<2> When PFEN = 1 and PFCM = 1
Note If the conversion result is not read before the end of the next conversion after INTAD is output, the result is
Remark n = 0 to 7
The higher 8 bits of ADCR and PFT values are compared when A/D conversion ends and INTAD is only
generated when the higher 8 bits of ADCR
The higher 8 bits of ADCR and PFT values are compared when A/D conversion ends and INTAD is only
generated when the higher 8 bits of ADCR < PFT.
replaced by the next conversion result.
A/D conversion
Higher 8 bits
(PFEN = 1)
of ADCR
INTAD
Figure 12-12. Power-Fail Detection (When PFEN = 1 and PFCM = 0)
PFT
First conversion
ANIn
CHAPTER 12 A/D CONVERTER
Condition match
User’s Manual U16899EJ3V0UD
PFT.
ANIn
80H
80H
Note
ANIn
7FH
ANIn
80H