UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 80

• Manufacturer Part Number: UPD78F9221CS-CAC-A
• Description: MCU 8BIT 2KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9221CS-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• 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: -

CHAPTER 5 CLOCK GENERATORS
Figure 5-7 shows examples of incorrect resonator connection.
Figure 5-7. Examples of Incorrect Resonator Connection (1/2)
(a) Too long wiring of connected circuit
(b) Crossed signal lines
PORT
V
X1
X2
V
X1
X2
SS
SS
(d) Current flowing through ground line of oscillator
(c) Wiring near high fluctuating current
(Potential at points A, B, and C fluctuates.)
V
DD
PORT
V
X1
X2
SS
V
X1
X2
SS
A
B
C
High current
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User’s Manual U16898EJ6V0UD