MC-10118B_15 Datasheet, PDF (39/66 Pages) Renesas Technology Corp – MULTIMEDIA PROCESSOR FOR MOBILE APPLICATIONS

MC-10118B
2.5.2 System control
(1) Clock (input timing requirements)
Parameter
C32K frequency
C32K rise/fall time
32 kHz input clock duty ratio
32 kHz input clock jitter
OSC oscillation frequency range
Symbol
fclkC32K
trfC32K
IdutyC32K
IjitterC32K
fC(OSC)
OSC clock stabilization time
tSTAB12
Conditions
ʵ
10 to 90%
ʵ
ʵ
Internal oscillator (OSC12M_CKI
or OSC12M_CKO)
(with crystal resonator
DSX530GA; made by Daishinku)
CI = CO = 15 pF
The oscillating frequency : 12MHz
(with crystal resonator
DSX530GA; made by Daishinku)
MIN.
ʵ
ʵ
40
20
ʵ
ʵ
TYP.
32.768
ʵ
50
ʵ
ʵ
0.5
MAX.
ʵ
1
60
20
13
1
Unit
kHz
s
%
ns
MHz
ms
Input clock
C32K
Figure 2-2. Clock Timing
1/fclkC32K
trfC32K
trfC32K
twC32K(H)
twC32K(L)
Figure 2-3. Recommended Oscillator
OSC12M_CKI
OSC12M_CKO
Cautions 1. Keep the wiring length between the oscillator and the OSC12M_CKI and OSC12M_CKO pins
as short as possible.
2. Do not cross the wiring with the other signal lines in the area enclosed by the broken lines.
3. Thoroughly evaluate matching of the resonator.
Data Sheet R19DS0008EJ0700
37