R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 263

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
20.8.1.4
20.8.1.5
20.8.1.6
20.8.1.7
20.8.1.8
20.8.1.9
(a) Disable an interrupt by setting the priority level of all maskable interrupts to level 0. Note that
(b) Set the FMR40 = 1 (enable erase suspend function) and the I flag = 1 (enable interrupt) when
(c) Use EW0 mode.
Write “0” to the corresponding bits before writing “1” when setting the FMR01, FMR02, or FMR11 bit
to “1”. Do not generate an interrupt between writing “0” and “1”.
In EW0 Mode, if the power supply voltage drops while rewriting any block in which the rewrite control
program is stored, the flash memory may not be able to be rewritten because the rewrite control
program cannot be rewritten correctly. In this case, use standard serial I/O mode.
Do not write additions to the already programmed address.
When setting the FMSTP bit in the FMR0 register to “1” (flash memory stops) during erase-suspend
in EW1 mode, a CPU stops and cannot return. Do not set the FMSTP bit to “1”.
Do not enter stop mode or wait mode during erase-suspend.
When an interrupt request is generated during erasing with FMR01 = 1 (CPU rewrite mode enabled)
in FMR0 register, FMR11 = 1 (EW1 mode) in FMR1 register and FMR40 = 0 (disable erase suspend
function) in FMR4 register, the CPU may not operate properly.
Select any of the following 3 processes as a software countermeasure:
Jan 19, 2006
disabling the interrupts by the I flag will not be in the software countermeasure
using the FMR11 = 1 (EW1 mode)
How to Access
Rewriting User ROM Area
Reset Flash Memory
Entering Stop Mode or Wait Mode
Interrupt Request Generation during Auto-erase Operation in EW1
Mode
Program
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20. Precautions