R5F21102DFP#U0 Renesas Electronics America, R5F21102DFP#U0 Datasheet - Page 34

• Manufacturer Part Number: R5F21102DFP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/10r

Specifications of R5F21102DFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, WDT
• Number Of I /o: 22
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/10 Group
Rev.1.20 Jan 27, 2006
REJ09B0019-0120
6.2 On-Chip Oscillator Clock
This clock, approximately 125 kHz, is supplied by the on-chip oscillator. This clock is used as the clock
source for the CPU clock, peripheral function clock, f
After reset, the on-chip oscillator clock divided by 8 is selected for the CPU clock.
To use the main clock for the CPU clock, set the OCD2 in the OCD register to “0” (selecting main clock)
after the main clock becomes oscillating stably. If the main clock stops oscillating when the OCD1 to
OCD0 bits in the OCD register is “11
automatically starts operating, supplying the necessary clock for the microcomputer.
The frequency of the on-chip oscillator varies depending on the supply voltage and the operation ambient
temperature. The application products must be designed with sufficient margin for the frequency change.
page 22 of 180
2
” (oscillation stop detection function enabled), the on-chip oscillator
RING
, and f
RING128
.
6.2 On-chip Oscillator Clock