r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 113

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 9.1
Voltage monitor 0 reset
Interrupt request
Power-on reset
Software reset
RESET
CM03
CM05
WAIT instruction
CM02 to CM06: Bits in CM0 register
CM10, CM13, CM14, CM16, CM17: Bits in CM1 register
CM30: Bit in CM3 register
CM40 to CM42: Bits in CM4 register
OCD0, OCD1: Bits in OCD register
FRA00, FRA01, FRA03: Bits in FRA0 register
FRA20 to FRA22, FRA24, FRA25: Bits in FRA2 register
CSPRO: Bit in CSPR register
Oscillation Stop Detection Circuit
CM10 = 1 (stop mode)
XCIN
XIN
Preliminary document
Specifications in this document are tentative and subject to change.
Clock Generation Circuit Block Diagram
CM30
XIN clock
CM04
CM13
CM04
CM13
XCOUT
XOUT
Pulse generation
circuit for clock edge
detection and
charge/discharge
control
R
R
S Q
S Q
CSPRO
FRA00
CM14
CM02
XIN clock
Low-speed on-chip oscillator
XCIN clock
Frequency adjustable
Forcible discharge when OCD0 = 0
for watchdog timer
Registers FRA24 and FRA25
discharge
Charge/
circuit
XCIN clock
XIN clock
fHOCO-F
High-speed
Oscillation
Low-speed
detection
OCD1
oscillator
oscillator
fLOCO
on-chip
on-chip
fC1
stop
FRA01 = 1
FRA01 = 0
fLOCO
Divider
CM40 to CM42
Selected by
FRA20 to FRA22
1/2
Oscillation stop detection
Interrupt generation circuit
fOCO (on-chip oscillator clock)
System clock
FRA03 = 1
FRA03 = 0
Voltage monitor 1 interrupt
Voltage monitor 2 interrupt
Watchdog timer interrupt
1/2
CM06, CM16, and CM17
1/1
1/2
Divider
Selected by
Divider
(1/128)
Power-on reset
detection circuit
1/4
Voltage
circuit
1/8
1/8
1/32
9. Clock Generation Circuit
Oscillation stop detection,
watchdog timer,
voltage monitor 1 interrupt,
voltage monitor 2 interrupt
fLOCOWDT
fC1
fC2
fC32
fHOCO
fHOCO-F
fOCO
fOCO128
fLOCO
f1
f2
f4
f8
f32
CPU clock
Page 82 of 725
Peripheral
function clocks