4-Bit Single-Chip Microcomputer
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Basic Oscillation Frequency
Instruction Cycle
Crystal Oscillation Frequency
SYMBOL
VDD
VDSP
f
t
fOSC
CONDITIONS
NOTE:
1. Starting condition: within 10 seconds after power on.
Oscillation Circuit
CK1
CK2
Rf
CRYSTAL Rd
OSCIN
OSCOUT
CRYSTAL
CG
CD
CG = 33 pF CD = 22 pF
OSCILLATOR CIRCUIT 1
C1 = 470 pF, C2 = 470 pF
Rf = 1 MΩ
Rd = 1 kΩ
Oscillator: KBR-455B (Kyocera)
OSCILLATOR CIRCUIT 2
C1 = 330 pF, C2 = 330 pF
Rf = 1 MΩ
Rd = 1.5 kΩ
Oscillator: CSB455E (Murata)
565-3
SM565
MIN.
2.4
2.4
TYP.
455
8.79
32.768
MAX.
5.5
VDD
UNIT
V
V
kHz
µs
kHz
NOTE
1
Microcomputer Data Sheet
5