UPD78F1233GB-GAH-AX Renesas Electronics America, UPD78F1233GB-GAH-AX Datasheet - Page 538

• 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: -

536
Figure 8-12. Using the Internal Reference Voltage for the Comparator Reference Voltage (Using a Comparator
Remark
n = 0, 1
CnRVM register setting
CnCTL register setting
PER1 register setting
Wait (1.5 μ s or more)
PIM8 register setting
OAM register setting
PM8 register setting
Wait (3 μ s or more)
CnVRE bit setting
OAEN bit setting
CnEN bit setting
CnOE bit setting
Operation start
CHAPTER 8 COMPARATORS/PROGRAMMABLE GAIN AMPLIFIERS
Start
and an Programmable gain Amplifier)
User’s Manual U19678EJ1V1UD
Enable the programmable gain amplifier operation by
setting (1) the OAEN bit of OAM. At the same time,
enable the external input from the programmable gain
amplifier input pin (PGAI). The programmable gain
amplifier output signal will be input as the positive-side
input voltage of the comparator.
Cancel the reset state of the comparator or
programmable gain amplifier and start clock
supply.
Use CnVRS0 to CnVRS2 of CnRVM to select the
internal reference voltage.
Enable the comparator operation by setting (1)
the CnEN bit of CnCTL.
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.
Set the amplification factor by using OAVG0 to
OAVG2 of OAM.
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.
Use the CnINV bit of CnCTL to select
forwarding or reversing of the output.
Use CnDFS0 to CnDFS2 to select the
noise elimination width.