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SH7616 Datasheet(PDF) 146 Page - Renesas Technology Corp

Part # SH7616
Description  32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
PDF  935 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7616 Datasheet(HTML) 146 Page - Renesas Technology Corp

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Section 3 Oscillator Circuits and Operating Modes
Rev. 2.00 Mar 09, 2006 page 120 of 906
REJ09B0292-0200
MOV.L
#WTCSR,R1
MOV.W
#H'A51F,R2
MOV.L
#H'26200000,R3
MOV.L
#FMR,R4
jmp
@r5
nop
nop
nop
nop
nop
clock4_err:
bra
clock4_err
nop
nop
nop
nop
;
;
Main portion of frequency change code.
;
First copy this to XRAM and then run it in XRAM.
FREQUENCY:
;
<Watchdog timer control and status register setting>
;
Clear TME bit.
;
Clock input to WTCNT is
φ/16384
;
(Overflow frequency = 262.144 ms)
MOV.W
R2,@R1
;
<External cache through area read>
;
Cache through area of external member space 3: H'26200000
MOV.L
@R3,R0
;
<Frequency change register setting>
;
PLL circuit 1
→ Disabled.
;
PLL circuit 1
→ Enabled.



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