sh66k33a SinoWealth Micro-Electronics Corp. Ltd, sh66k33a Datasheet - Page 6
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sh66k33a
Manufacturer Part Number
sh66k33a
Description
Mask 1k 4-bit Micro-controller
Manufacturer
SinoWealth Micro-Electronics Corp. Ltd
Datasheet
1.SH66K33A.pdf
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5. System Clock and Oscillator
The oscillator generates the basic clock pulses that provide the system clock to supply CPU and on-chip peripherals.
System clock = f
5.1. Instruction Cycle Time:
(1) 4/455kHz ( ≈ 8.79 µ s) for 455kHz oscillator.
(2) 16/455kHz ( ≈ 35.16 µ s) for 455kHz oscillator.
(3) 4/4MHz (= 1 µ s) for 4MHz oscillator.
(4) 16/4MHz (= 4 µ s) for 4MHz oscillator.
5.2. Oscillator Type
(1) Crystal Oscillator: 400kHz - 4MHz
(2) Ceramic Resonator: 400kHz - 4MHz
(3) RC Oscillator: 4MHz
When use Internal RC oscillator, OSCI is used as PORTE.0 and OSCO is used as PORTE.1.
OSC
/4 or f
Internal R
OSC
/16 (Code Option)
PORTE.0
PORTE.1
OSC
OSCO
OSCO
OSCI
OSCI
RC
Ceramic
Crystal
C2 20pF (for reference only)
C1 20pF (for reference only)
C1 20pF (for reference only)
C2 20pF (for reference only)
6
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