R5F21217JFP#U1 Renesas Electronics America, R5F21217JFP#U1 Datasheet - Page 42
R5F21217JFP#U1
Manufacturer Part Number
R5F21217JFP#U1
Description
MCU FLASH 48K 2.5K CMOS 48LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/21r
Datasheet
1.R5F21216JFP.pdf
(503 pages)
Specifications of R5F21217JFP#U1
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21217JFP#U1R5F21217JFP
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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- Download datasheet (6Mb)
R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
5.1
5.1.1
5.1.2
A reset is applied using the RESET pin. When an “L” signal is applied to the RESET pin while the power supply
voltage meets the recommended performance condition, the pins, CPU, and SFR are reset (refer to Table 5.2 Pin
Functions after Reset). When the input level applied to the RESET pin changes “L” to “H”, the program is
executed beginning with the address indicated by the reset vector. After reset, the low-speed on-chip oscillator
clock divided-by-8 is automatically selected for the CPU clock.
Refer to 4. Special Function Registers (SFRs) for the status of the SFR after reset.
The internal RAM is not reset. If the RESET pin is pulled “L” during writing to the internal RAM, the internal
RAM will be in indeterminate state.
Figure 5.5 shows the Example of Hardware Reset Circuit and Operation and Figure 5.6 shows the Example of
Hardware Reset Circuit (Usage Example of External Supply Voltage Detection Circuit) and Operation.
Hardware Reset
(1) Apply “L” to the RESET pin.
(2) Wait for 10µs or more.
(3) Apply “H” to the RESET pin.
(1) Apply “L” to the RESET pin.
(2) Let the power supply voltage increase until it meets the recommended performance condition.
(3) Wait for td(P-R) or more to allow the internal power supply to stabilize (refer to 20. Electrical
(4) Wait for 10µs or more.
(5) Apply “H” to the RESET pin.
When Power Supply is Stable
Power On
Characteristics).
Page 24 of 458
5. Resets
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