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R8C/15 Datasheet(PDF) 51 Page - Renesas Technology Corp

Part # R8C/15
Description  16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / R8C/Tiny SERIES
PDF  277 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C/15 Datasheet(HTML) 51 Page - Renesas Technology Corp

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R8C/14 Group, R8C/15 Group
9. Clock Generation Circuit
Rev.2.10
Jan 19, 2006
Page 39 of 253
REJ09B0164-0210
Figure 9.1
Clock Generation Circuit
S Q
R
1/2
1/2
1/2
1/2
1/2
S Q
R
HRA00
HRA01=1
HRA01=0
On-Chip Oscillator Clock
CM14
Voltage
Detection
Circuit
CPU Clock
a
b
c
d
e
OCD2=0
OCD2=1
Divider
Oscillation
Stop
Detection
Main Clock
XOUT
CM13
CM05
XIN
CM02
WAIT
Instruction
CM10=1(Stop Mode)
a
d
c
h
b
CM06=0
CM17 to CM16=11b
CM06=1
CM06=0
CM17 to CM16=10b
CM06=0
CM17 to CM16=01b
CM06=0
CM17 to CM16=00b
Details of Divider
Oscillation Stop Detection Circuit
Pulse generation
circuit for clock
edge detection and
charge, discharge
control circuit
Main Clock
Forcible discharge when OCD0(1)=0
Charge,
Discharge
Circuit
Oscillation Stop Detection
Interrupt Generation
Circuit Detection
Watchdog
Timer Interrupt
OCD2 Bit Switch Signal
CM14 Bit Switch Signal
Oscillation Stop
Detection,
Watchdog Timer,
Voltage Monitor 2
Interrupt
e
g
UART0
Timer C
Timer Z
Timer X
fRING-fast
fRING
fRING-S
g
f1
f2
f4
f8
f32
h
INT0
1/128
fRING128
Watchdog
Timer
A/D
Converter
OCD1(1)
NOTES :
1. Set the same value to the OCD1 and OCD0 bits.
High-Speed
On-Chip
Oscillator
Low-Speed
On-Chip
Oscillator
Power-On
Reset Circuit
SSU
CM02, CM05, CM06: Bits in CM0 register
CM10, CM13, CM14, CM16, CM17: Bits in CM1 register
OCD0, OCD1, OCD2: Bits in OCD register
HRA00, HRA01: Bits in HRA0 register
Voltage Watch
2 Interrupt
System Clock
HRA1 Register
HRA2 Register
Frequency Adjustable
CM13
RESET
Power-on reset
Software reset
Interrupt request



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