UPD78F1233GB-GAH-AX Renesas Electronics America, UPD78F1233GB-GAH-AX Datasheet - Page 536

• Manufacturer Part Number: UPD78F1233GB-GAH-AX
• Description: MCU 16BIT 78K0R/LX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1233GB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 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: -

534
Figure 8-10. Using the Internal Reference Voltage for the Comparator Reference Voltage (Using Only a
Remark
n = 0 and 1 (78K0R/IB3: n = 0).
CHAPTER 8 COMPARATORS/PROGRAMMABLE GAIN AMPLIFIERS
CnRVM register setting
CnCTL register setting
Wait (1.5 μ s or more)
PER1 register setting
PIM8 register setting
PM8 register setting
CnVRE bit setting
CnEN bit setting
CnOE bit setting
Operation start
Start
User’s Manual U19678EJ1V1UD
Comparator)
Set to use the internal reference voltage by
setting (1) CnVRE of CnRVM. The internal
reference voltage will be input to the negative
side of the comparator at the same time.
Cancel the reset state of the comparator or
programmable gain amplifier and start clock
supply.
Select the internal reference voltage by using
CnVRS0 to CnVRS2 of CnRVM.
Enable the comparator output signal by setting
(1) the CnOE bit of CnCTL.
Set the PM8 register to the input mode.
Set to the digital input disable
(use port8 as the analog input) state.
Use the CnINV bit of CnCTL to select forwarding or
reversing of the output. Use CnDFS0 to CnDFS2
to select the noise elimination width.
Enable the comparator operation by setting (1) the
CnEN bit of CnCTL. Input to the positive side of
the comparator from the external pin will be
enabled at the same time.