R5F2L3AAANFP#U1 Renesas Electronics America, R5F2L3AAANFP#U1 Datasheet - Page 152

• Manufacturer Part Number: R5F2L3AAANFP#U1
• Description: MCU FLASH 96+4KB 100LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/Lx/3AAr

Specifications of R5F2L3AAANFP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LCD, POR, PWM, Voltage Detect, WDT
• Number Of I /o: 88
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 20x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,
R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group
REJ09B0441-0100 Rev.1.00
Page 115 of 802
The clocks generated by the clock generation circuits are described below.
8.3
Figure 8.3
• When CM05 bit in CM0 register is 0 (XIN clock oscillates)
The XIN clock is supplied by the XIN clock oscillation circuit. This clock is used as the clock source for the CPU
and peripheral function clocks. The XIN clock oscillation circuit is configured by connecting a resonator between
pins XIN and XOUT. The XIN clock oscillation circuit includes an on-chip feedback resistor, which is
disconnected from the oscillation circuit in stop mode in order to reduce the amount of power consumed by the
chip. The XIN clock oscillation circuit may also be configured by feeding an externally generated clock to the
XOUT pin.
Figure 8.3 shows Examples of XIN Clock Connection Circuit.
During and after reset, the XIN clock stops.
After setting the CM13 bit in the CM1 register to 1 (XIN-XOUT pin), the XIN clock starts oscillating when the
CM05 bit in the CM0 register is set to 0 (XIN clock oscillates).
After the XIN clock oscillation stabilizes, the XIN clock is used as the CPU clock source by setting the OCD2 bit in
the OCD register to 0 (XIN clock selected).
The power consumption can be reduced by setting the CM05 bit in the CM0 register to 1 (XIN clock stops) by
setting the OCD2 bit is to 1 (on-chip oscillator clock selected).
In stop mode, all clocks including the XIN clock stop. Refer to 9. Power Control for details.
and CM13 bit in CM1 register is 1 (XIN-XOUT pin)
XIN Clock
Note:
1. Insert a damping resistor if required. The resistance will vary depending on the oscillator and
Ceramic resonator external circuit
(on-chip feedback resistor)
XIN
externally, insert a feedback resistor between XIN and XOUT following the instructions.
If the oscillator manufacturer's datasheet specifies that a feedback resistor be added to the chip
the oscillation drive capacity settings. Use the values recommended by the oscillator manufacturer.
Examples of XIN Clock Connection Circuit
CIN
MCU
Rf
(1)
Oct 30, 2009
XOUT
COUT
Rd
(1)
• When CM05 bit in CM0 register is 1 (XIN clock stops),
CM07 bit is 0 (XIN clock),
CM11 bit in CM1 register is 1
(on-chip feedback resistor disabled), and
CM13 bit is 0 (I/O ports P12_0 and P12_1)
VSS
VCC
Externally generated clock
(on-chip feedback resistor)
XIN
External clock input circuit
MCU
8. Clock Generation Circuit
XOUT
Open