R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 222

• 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
Figure 18.10
NOTES :
1. Set the FMR01 bit to “1” (CPU rewrite enable mode) before setting the FMSTP bit to “1”.
2. When the clock source for the CPU clock can be changed, the clock to which to be changed must be stable.
3. Insert a 15 us wait time in a program. Do not access to the flash memory during this wait time.
4. Ensure 10 us until setting “0” (flash memory operates) after setting the FMSTP bit to “1” (flash memory stops).
Jump to on-chip oscillator mode (main clock stops)
program which has been transferred to any areas other
than the flash memory.
(The subsequent process is executed by a program in
any areas other than the flash memory.)
Transfer a on-chip oscillator mode (main clock stops)
program to any areas other the flash memory
Jan 19, 2006
Stops)
Process to Reduce Power Consumption in On-Chip Oscillator Mode (Main Clock
Page 207 of 254
On-Chip Oscillator Mode
(Main Clock Stops) Program
Jump to a specified address in the flash memory
Turn main clock on→wait until oscillation
stabilizes→switch the clock source for CPU
clock
(Flash memory stops. Low power consumption
state)
Switch the clock source for the CPU clock.
Turn XIN off
Wait until the flash memory circuit stabilizes
(15 ms)
Process in on-chip oscillator mode (main
clock stops)
Write “0” to the FMR01 bit before writing “1”
(2)
(1)
(3)
(CPU rewrite mode enabled)
(CPU rewrite mode disabled)
Write “1” to the FMSTP bit
(flash memory operation)
Write “0” to the FMR01 bit
Write “0” to the FMSTP bit
18. Flash Memory Version
(4)