R5F212A8SNFA#U0 Renesas Electronics America, R5F212A8SNFA#U0 Datasheet - Page 59
R5F212A8SNFA#U0
Manufacturer Part Number
R5F212A8SNFA#U0
Description
IC R8C/2A MCU FLASH 64K 64-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/2Ar
Specifications of R5F212A8SNFA#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
55
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
3K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
64-LQFP
For Use With
R0K5212D8S001BE - KIT STARTER FOR R8C/2DR0K5212D8S000BE - KIT DEV FOR R8C/2D
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F212A8SNFA#U0R5F212A8SNFA#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/2A Group, R8C/2B Group
Rev.2.00
REJ09B0324-0200
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 supply voltage
meets the recommended operating conditions, pins, CPU, and SFRs are all reset (refer to Table 5.2 Pin Functions
while RESET Pin Level is “L”). When the input level applied to the RESET pin changes from “L” to “H”, a
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 as the CPU clock.
Refer to 4. Special Function Registers (SFRs) for the state of the SFRs after reset.
The internal RAM is not reset. If the RESET pin is pulled “L” while writing to the internal RAM is in progress, the
contents of internal RAM will be undefined.
Figure 5.5 shows an Example of Hardware Reset Circuit and Operation and Figure 5.6 shows an 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 10 µs or more.
(3) Apply “H” to the RESET pin.
(1) Apply “L” to the RESET pin.
(2) Let the supply voltage increase until it meets the recommended operating conditions.
(3) Wait for td(P-R) or more to allow the internal power supply to stabilize (refer to 21. Electrical
(4) Wait for 10 µs or more.
(5) Apply “H” to the RESET pin.
Nov 26, 2007
When Power Supply is Stable
Power On
Characteristics).
Page 37 of 580
5. Resets
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