R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 83
![MCU FLASH 96K 5K CMOS 48-LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F2121AJFP#U0
Manufacturer Part Number
R5F2121AJFP#U0
Description
MCU FLASH 96K 5K CMOS 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/21r
Datasheet
1.R5F21216JFP.pdf
(503 pages)
Specifications of R5F2121AJFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
96KB (96K x 8)
Program Memory Type
FLASH
Ram Size
5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Part Number
Manufacturer
Quantity
Price
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R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
Figure 10.1
Interrupt request
Power-on reset
Software reset
CM02, CM05, CM06: Bits in CM0 register
CM10, CM13, CM14, CM16, CM17: Bits in CM1 register
OCD0, OCD1, OCD2: Bits in OCD register
FRA00, FRA01: Bits in FRA0 register
RESET
CM05
Oscillation stop detection circuit
CM10 = 1 (stop mode)
XIN
XIN clock
instruction
Clock Generation Circuit
WAIT
CM13
CM13
XOUT
Pulse generation
circuit for clock edge
detection and
charge, discharge
control circuit
R
R
S Q
S Q
Page 65 of 458
FRA00
CM14
CM02
Frequency adjustable
XIN clock
Forcible discharge when OCD0 = 0
Charge,
discharge
circuit
a
FRA1 register
Oscillation
stop
detection
High-speed
on-chip
oscillator
Low-speed
on-chip
oscillator
OCD1
b
CM06 = 0
CM17 to CM16 = 00b
System clock
FRA01 = 1
FRA01 = 0
1/2
OCD2 = 1
OCD2 = 0
fOCO-S
Divider
c
FRA2 register
Oscillation stop detection
interrupt generation
circuit detection
CM06 = 0
CM17 to CM16 = 01b
fOCO
1/2
Watchdog
timer interrupt
Voltage watch
2 interrupt
On-chip oscillator
clock
a
OCD2 bit switch signal
CM14 bit switch signal
b
d
CM06 = 0
CM17 to CM16 = 10b
c
Divider
d
fOCO-F
e
1/2
Power-on
reset
Voltage
detection
circuit
g
fOCO40M
h
f2
f4
e
f1
f8
f32
Divider
(1/128)
CM06 = 1
INT0
1/2
Timer RA
Oscillation stop
detection,
watchdog timer, voltage
monitor 2 interrupt
Watchdog
fOCO128
timer
CM06 = 0
CM17 to CM16 = 11b
Timer RB
Details of divider
1/2
h
CPU clock
Timer RD
10. Clock Generation Circuit
g
Timer RE
converter
A/D
UART0
UART1
SSU/IIC
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