R5F21217JFP#U0 Renesas Electronics America, R5F21217JFP#U0 Datasheet - Page 409
R5F21217JFP#U0
Manufacturer Part Number
R5F21217JFP#U0
Description
IC R8C/20 MCU FLASH 48LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/21r
Datasheet
1.R5F21216JFP.pdf
(503 pages)
Specifications of R5F21217JFP#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
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
2.5K 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
For Use With
R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21217JFP#U0R5F21217JFP
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
R5F21217JFP#U0R5F21217JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
135
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R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
Figure 19.11
NOTES:
Jump to the high-speed on-chip oscillator mode, low-
speed on-chip oscillator mode (XIN clock stops) program
which has been transferred to the RAM.
(The subsequent processing is executed by a program in
the RAM.)
Transfer a high-speed on-chip oscillator mode, low-
speed on-chip oscillator mode (XIN clock stops)
program to the RAM
1. Set the FMR01 bit to 1 (CPU rewrite mode enabled) before setting the FMSTP bit to 1 .
2. Before the clock source for CPU clock can be changed, the clock to which to be changed must be stable.
3. Insert a 30 µ s wait time in a program. Do not access to the flash memory during this wait time.
Low-Speed On-Chip Oscillator Mode (XIN Clock Stops) and Low-Speed Clock Mode
(XIN Clock Stops)
Process to Reduce Power Consumption in High-Speed On-Chip Oscillator Mode,
Page 391 of 458
High-speed on-chip oscillator
mode, low-speed on-chip
oscillator mode (XIN clock stops)
program
Jump to a specified address in the flash memory
Turn XIN clock on → wait until oscillation
stabilizes → switch the clock source for CPU
clock
Switch the clock source for the CPU clock.
Turn XIN off
Wait until the flash memory circuit stabilizes
(30 µ s)
Write 1 to the FMSTP bit (Flash memory stops.
Process in high-speed on-chip oscillator
mode, low-speed on-chip oscillator mode
(XIN clock stops)
Write 0 to the FMR01 bit before writing
(2)
(3)
Low power consumption state)
(CPU rewrite mode enabled)
(CPU rewrite mode disabled)
(flash memory operation)
Write
Write 0 to the FMSTP bit
0
to the FMR01 bit
19. Flash Memory
(1)
1
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