LC865520B Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LC865520B

8-Bit Single Chip Microcontroller with On-Chip 20/16/12/08/04K-Byte ROM and 512-Byte RAM

SANYO -> Panasonic 

LC865520B/16B/12B/08B/04B

Recommended Oscillation Circuit and Characteristics

The recommended circuit parameters are verified by an oscillator manufacturer using a SANYO provided oscillation

evaluation board.

Table 1. Recommended circuit parameters for the main system clock using the ceramic resonator

Frequency Manufacturer

Oscillator

Recommended circuit

parameter

Operating supply

voltage range

Note

C1

C2 Rd1

6MHz MURATA

CSA6.00MG

CSTS0600MG03

33pF 33pF 470Ω

(15pF) (15pF) 470Ω

4.5V to 6.0V

4.5V to 6.0V Internal C1, C2

3MHz MURATA

CSA3.00MG

CST3.00MGW

33pF 33pF 470Ω

(30pF) (30pF) 470Ω

2.5V to 6.0V

2.5V to 6.0V Internal C1, C2

Table 2. Recommended circuit parameters for the sub system clock using the crystal oscillation

Recommended circuit

Frequency Manufacturer Oscillator

parameter

Operating supply

Note

voltage range

C3

C4

Rd2

32.768kHz SEIKO EPSON MC-306 18pF 18pF 560Ω

2.5V to 6.0V

The recommended circuit parameter may vary according to the applications. For further assistance, please contact the

oscillator manufacturer keeping the following in mind.

!"Since the oscillation frequency precision is affected by the wiring capacitance of the application board, etc., is it required

to adjust the oscillation frequency on the production board.

!"The oscillation frequency and the recommended circuit parameter shown above apply when the operating temperature

range is -30°C to +70°C. When using the clock oscillation circuit under the conditions which exceed the operating

temperature range or in applications that require precision tolerances, please contact the oscillator manufacturer.

!"If using other circuit parameter than listed above, please contact SANYO.

Since the gain of oscillation circuit is reduced in order to minimize the power consumption of the circuit and the circuit can be

affected by the noise, wiring capacity, etc., it is suggested to take the followings into consideration.

!"The distance between the clock I/O terminals (XT1, XT2) and external parts should be as short as possible.

!"The capacitors' (C1, C2) VSS should be placed close to the microcontroller's GND terminal and away from any other

GND.

!"The signal lines with large current or with rapid state changes should be placed away from the oscillation circuit.

CF1

C1

CF2

Rd1

CF

C2

Figure 1 Ceramic oscillation circuit

XT1

XT2

Rd2

X’tal

C3

C4

Figure 2 Crystal oscillation circuit

No.6697-18/21

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