LC662508A 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LC662508A

Four-Bit Single-Chip Microcontrollers with 8, 12, and 16 KB of On-Chip ROM

SANYO -> Panasonic 

LC662508A, 662512A, 662516A

OSC1 (OSC2)

External clock Open

textL

textH

textF

textR

1/fext

Figure 1 External Clock Input Waveform

VDD

0.8 VDD

0.2 VDD

VSS

OSC1 OSC2

C1 Ceramic C2

oscillator

Oscillator unstable

period tCFS

Operating VDD lower limit

Stable oscillation

Figure 2 Ceramic Oscillator Circuit

Figure 3 Oscillator Stabilization Period

Table 1 Recommended Ceramic Oscillator Constants

External capacitor type

4 MHz

(Murata Mfg. Co., Ltd.)

CSA4.00MG

C1 = 33 pF

C2 = 33 pF

4 MHz

(Kyocera Corporation)

KBR4.0MSB

C1 = 33 pF

C2 = 33 pF

Built-in capacitor type

4 MHz

(Murata Mfg. Co., Ltd.)

CST4.00MG

4 MHz

(Kyocera Corporation)

KBR4.0MKC

tCKCY

SCK0

SCK1

0.2 VDD (output)

0.4 VDD (intput)

tCKL tCKR tCKH

tICK tCKI

tCKF

0.8V DD (input)

VDD – 1 (output)

SI0

SI1

tCK0

0.8 VDD

0.2 VDD

SO0

SO1

VDD – 1

0.4 VDD

Figure 4 Serial I/O Timing

Test

point

R = 1kΩ

C = 50 pF

Figure 5 Timing Load

No. 5997-16/17

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