r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 144

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
Figure 9.1
Voltage monitor 0 reset
CM02, CM03, CM04, CM05, CM06, CM07: Bits in CM0 register
CM10, CM13, CM14, CM16, CM17: Bits in CM1 register
CM30: Bit in CM3 register
OCD0, OCD1, OCD2: Bits in OCD register
FRA00, FRA01, FRA03: Bits in FRA0 register
CSPRO: Bit in CSPR register
Interrupt request
Power-on reset
Software reset
RESET
CM03
CM05
WAIT instruction
Oscillation Stop Detection Circuit
CM10 = 1 (stop mode)
XCIN
XIN
Clock Generation Circuit
CM30
XIN clock
CM04
CM13
CM04
CM13
Pulse generation circuit
for clock edge detection
and charge/discharge
control
XCOUT
XOUT
S Q
R
S Q
R
CSPRO
FRA00
CM14
CM02
Low-speed on-chip oscillator
Frequency adjustable
XIN clock
Forcible discharge when OCD0 = 0
for watchdog timer
Charge/discharge
circuit
FRA1 register, FRA3 register
a
Oscillation stop detection
on-chip oscillator
on-chip oscillator
fC
High-speed
Low-speed
CM07 = 0
CM07 = 1
OCD1
b
CM06 = 0
CM17 to CM16 = 00b
fC
FRA01 = 1
FRA01 = 0
1/2
System clock
OCD2 = 1
fOCO-S
Divider
OCD2 = 0
c
1/2
FRA2 register
CM06 = 0
CM17 to CM16 = 01b
Oscillation stop detection
Interrupt generation circuit
fOCO (On-chip oscillator clock)
FRA03 = 1
FRA03 = 0
1/2
Voltage monitor 1 interrupt
Voltage monitor 2 interrupt
Watchdog timer interrupt
a
1/2
OCD2 bit switch signal
CM14 bit switch signal
d
b
CM06 = 0
CM17 to
CM16 = 10b
c
Divider
1/2
d
Divider
(1/128)
Power-on reset circuit
Voltage detection circuit
e
1/8
g
h
e
CM06 = 1
1/2
9. Clock Generation Circuit
CM06 = 0
CM17 to CM16 = 11b
Oscillation stop detection,
Watchdog timer,
Voltage monitor 1 interrupt,
Voltage monitor 2 interrupt
fOCO-WDT
fC
fC2
fC4
fC32
fOCO40M
fOCO-F
fOCO
fOCO128
fOCO-S
f1
f2
f4
f8
f32
CPU clock
1/2
h
Detail of divider
Page 112 of 740
g
Peripheral
function
clock