UPD78F1233GB-GAH-AX Renesas Electronics America, UPD78F1233GB-GAH-AX Datasheet - Page 246

• 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: -

244
Caution
When using the X1 oscillator and XT1 oscillator, wire as follows in the area enclosed by the
broken lines in the Figures 5-11 and 5-12 to avoid an adverse effect from wiring capacitance.
• Keep the wiring length as short as possible.
• Do not cross the wiring with the other signal lines. Do not route the wiring near a signal
• Always make the ground point of the oscillator capacitor the same potential as V
• Do not fetch signals from the oscillator.
• Pins and circuit boards include parasitic capacitance.
• Configure the circuit of the circuit board, using material with little wiring resistance.
• Place a ground pattern that has the same potential as V
• Be sure that the signal lines between the XT1 and XT2 pins, and the resonators do not cross
• The impedance between the XT1 and XT2 pins may drop and oscillation may be disturbed
• When coating the circuit board, use material that does not cause capacitance or leakage
line through which a high fluctuating current flows.
ground the capacitor to a ground pattern through which a high current flows.
evaluation using a circuit board to be actually used and confirm that there are no problems.
oscillator.
with the other signal lines. Do not route the wiring near a signal line through which a high
fluctuating current flows.
due to moisture absorption of the circuit board in a high-humidity environment or dew
condensation on the board. When using the circuit board in such an environment, take
measures to damp-proof the circuit board, such as by coating.
between the XT1 and XT2 pins.
CHAPTER 5 CLOCK GENERATOR
User’s Manual U19678EJ1V1UD
SS
as much as possible near the XT1
Therefore, perform oscillation
SS
. Do not