UPD78F9201MA-CAC-A Renesas Electronics America, UPD78F9201MA-CAC-A Datasheet - Page 81

• Manufacturer Part Number: UPD78F9201MA-CAC-A
• Description: MCU 8BIT 2KB FLASH 128B RAM
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9201MA-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 7
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

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5.4
5.4.1
PORT FUNCTIONS.
5.4.2
pins.
used as crystal or ceramic resonator connection pins.
PORT FUNCTIONS.
PD78F920x, and the EXCLK pin in PD78F950x can be used as I/O port pins.
The following three types of system clock oscillators are available.
Notes 1.
The 78K0S/KU1+ include a high-speed internal oscillator (8 MHz (TYP.)).
If the high-speed internal oscillation is selected by the option byte as the clock source, the X1 and X2 pins in
For details of the option byte, refer to CHAPTER 15 OPTION BYTE. For details of I/O ports, refer to CHAPTER 4
The crystal/ceramic oscillator oscillates using a crystal or ceramic resonator connected between the X1 and X2
If the crystal/ceramic oscillator is selected by the option byte as the system clock source, the X1 and X2 pins are
For details of the option byte, refer to CHAPTER 15 OPTION BYTE. For details of I/O ports, refer to CHAPTER 4
Figure 5-6 shows the external circuit of the crystal/ceramic oscillator.
Caution When using the crystal/ceramic oscillator, wire as follows in the area enclosed by the broken
High-speed internal oscillator:
Crystal/ceramic oscillator
External clock input circuit:
System Clock Oscillators
High-speed internal oscillator
Crystal/ceramic oscillator ( PD78F920x only)
2.
lines in Figure 5-6 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 line
• Always make the ground point of the oscillator capacitor the same potential as V
• Do not fetch signals from the oscillator.
through which a high fluctuating current flows.
ground the capacitor to a ground pattern through which a high current flows.
PD78F920x only
PD78F920x: X1 pin, PD78F950x: EXCLK pin
Figure 5-6. External Circuit of Crystal/Ceramic Oscillator ( PD78F920x Only)
Note 1
:
Internally oscillates a clock of 8 MHz (TYP.).
Oscillates a clock of 2 MHz to 10 MHz.
Supplies a clock of 2 MHz to 10 MHz to the X1 pin
CHAPTER 5 CLOCK GENERATORS
User’s Manual U18172EJ3V0UD
Crystal resonator
or ceramic resonator
V
X1
X2
SS
Note 2
.
SS
. Do not
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