R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 118

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 15
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 89 of 573
Figure 9.1
Voltage monitor 0 reset
XIN/XCIN
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
Interrupt request
Power-on reset
Software reset
CM05
CM03
RESET
CM13
CM01
WAIT instruction
CM01 = 0
CM04
CM10 = 1 (stop mode)
Oscillation Stop Detection Circuit
Clock Generation Circuit (With XIN and XCIN Pins Shared)
CM30
Stop signal
XIN clock
XOUT/XCOUT
XCIN clock
Pulse generation circuit
for clock edge detection
and charge/discharge
control
XIN clock
S Q
R
S Q
R
CSPRO
CM14
FRA00
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
OCD1
b
fC
CM06 = 0
CM17 to CM16 = 00b
CM07 = 0
CM07 = 1
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
d
CM14 bit switch signal
b
CM06 = 0
CM17 to
CM16 = 10b
c
Divider
d
1/2
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
fC4
fC32
fOCO40M
fOCO-F
fOCO
fOCO128
fOCO-S
f1
f2
f4
f8
f32
CPU clock
1/2
h
Detail of divider
g
Peripheral
function
clock