R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 267

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 15
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 238 of 573
19.3
Figure 19.2
19.3.1
Table 19.5
f1, f2, f4, f8, f32
fOCO40M
fOCO-F
External signal input
to TRCCLK pin
Count Source
The method of selecting the count source is common to all modes.
Table 19.5 lists the Count Source Selection, and Figure 19.2 shows a Count Source Block Diagram.
The pulse width of the external clock input to the TRCCLK pin should be three cycles or more of the timer RC
operation clock (refer to Table 19.1 Timer RC Operation Clock).
To select fOCO40M or fOCO-F as the count source, set the FRA00 bit in the FRA0 register set to 1 (high-speed
on-chip oscillator on), and then set bits TCK2 to TCK0 in the TRCCR1 register to 110b (fOCO40M) or 111b
(fOCO-F).
fOCO40M
TRCCLK
Common Items for Multiple Modes
fOCO-F
Count Source
f32
f1
f2
f4
f8
Count Source Selection
Count Source Block Diagram
TCK2 to TCK0: Bits in TRCCR1 register
Count source selected using bits TCK2 to TCK0 in TRCCR1 register
FRA00 bit in FRA0 register set to 1 (high-speed on-chip oscillator on)
Bits TCK2 to TCK0 in TRCCR1 register are set to 110b (fOCO40M)
Bits TCK2 to TCK0 in TRCCR1 register are set to 111b (fOCO-F)
Bits TCK2 to TCK0 in TRCCR1 register are set to 101b (count source is rising edge
of external clock) and the corresponding direction bit in the corresponding direction
register is set is set to 0 (input mode)
= 011b
= 100b
= 010b
= 101b
TCK2 to TCK0
= 001b
= 110b
= 000b
Selection Method
= 111b
Count source
TRC register
19. Timer RC