R5F21102DFP#U0 Renesas Electronics America, R5F21102DFP#U0 Datasheet - Page 36

• 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
Table 6.2 Setting Clock Related Bit and Modes
O n - c h i p
o s c i l l a t o r
m o d e
6.4 Power Control
M o d e s
H i g h - s p e e d m o d e
M e d i u m -
s p e e d
m o d e
There are three power control modes. All modes other than wait and stop modes are referred to as
normal operation mode.
6.4.1 Normal Operation Mode
Normal operation mode is further classified into three modes.
In normal operation mode, because the CPU clock and the peripheral function clocks both are on, the
CPU and the peripheral functions are operating. Power control is exercised by controlling the CPU
clock frequency. The higher the CPU clock frequency, the greater the processing capability. The lower
the CPU clock frequency, the smaller the power consumption in the chip. If the unnecessary oscillator
circuits are turned off, the power consumption is further reduced.
Before the clock sources for the CPU clock can be switched over, the new clock source to which
switched must be oscillating stably. If the new clock source is the main clock, allow a sufficient wait
time in a program until it becomes oscillating stably.
• High-speed Mode
• Medium-speed Mode
• On-Chip Oscillator Mode
The main clock divided by 1 undivided provides the CPU clock. If the CM14 bit is set to “0” (on-chip
oscillator on), the f
The main clock divided by 2, 4, 8 or 16 provides the CPU clock. If the CM14 bit is set to “0” (on-chip
oscillator on), the f
The on-chip oscillator clock divided by 1 (undivided), 2, 4, 8 or 16 provides the CPU clock. The on-
chip oscillator clock is also the clock source for the peripheral function clocks.
d i v i d e d b y 2
d i v i d e d b y 4
d i v i d e d b y 8
d i v i d e d b y 1 6
n o d i v i s i o n
d i v i d e d b y 2
d i v i d e d b y 4
d i v i d e d b y 8
d i v i d e d b y 1 6
page 24 of 180
RING
RING
is used as the count source for timer Y.
is used as the count source for timer Y.
O C D r e g i s t e r
O C D 2
0
0
0
0
0
1
1
1
1
1
C M 1 7 , C M 1 6
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
C M 1 r e g i s t e r
2
2
2
2
2
2
2
2
C M 1 3
1
1
1
1
1
CM06
C M 0 r e g i s t e r
0
0
0
1
0
0
0
0
1
0
CM05
0 o r 1
0 o r 1
0 o r 1
0 o r 1
0 or 1
0
0
0
0
0
6.4 Power Control