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73S1209F Data Sheet
DS_1209F_004
VCO
Phase
Freq
DET
CPU CLOCK
DIVIDER
6 bits
MCLK
96MHz
1.5-48MHz
MPU CLOCK -
CPCLK
SMART CARD LOGIC
BLOCK CLOCK
SCCLK
SCLK
CLOCK
Prescaler 6bits
SC/SCE
CLOCK
Prescaler 6bits
SEL
ETU CLOCK
DIVIDER
12 bits
CPUCKDiv
See SC Clock descriptions for more accurate diagram
ETUCLK
MCount(2:0)
KEYCLK
I2CCLK
1kHz
400kHz
DIVIDE
by 120
DIVIDER
/93760
HIGH
XTAL
OSC
X12IN
X12OUT
M DIVIDER
/(2*N + 4)
HCLK
HOSCen
12.00MHz
12.00MHz
div 2
ICLK
SCCKenb
SELSC
DIVIDE
by 96
CLK1M
1MHz
7.386MHz
7.386MHz
3.6923MHz
I2C_2x
800kHz
div 2
SCECLK
di
v 2
di
v 2
Figure 3: Clock Generation and Control Circuits
24
Rev.
1.2