参数资料
型号: R5F2L368ANFA
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP64
封装: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64
文件页数: 80/87页
文件大小: 1311K
代理商: R5F2L368ANFA
RENESAS TECHNICAL UPDATE
TN-R8C-A002B/E
Date: Jul. 08, 2009
Page 2 of 8
2-1-1. Register Settings Related to the Clock Generation Circuit
2-1-1-1. High-Speed On-Chip Oscillator Control Register 0 (FRA0)
(1) Do NOT set FRA00 bit to 1 (high-speed on-chip oscillator on) [refer to Figure 2-1]
(2) Do NOT set FRA01 bit to 1 (high-speed on-chip oscillator selected as fOCO clock source) [refer to Figure 2-1].
The fOCO is a clock source of timer RA.
(3) Do NOT set FRA03 bit to 1 (fOCO-F divided by 128 selected as a clock source of fOCO128) [refer to Figure 2-1].
fOCO128 is used as an input-capture signal of timers RC and RD.
2-1-1-2. System Clock Control Register 3 (CM3)
(1) Do NOT set bits CM37 to CM36 bits to 10b (high-speed on-chip oscillator selected as CPU clock when the MCU exits
wait mode or stop mode) [refer to Figure 2-2].
2-1-1-3. High-Speed On-Chip Oscillator Control Register i (FRAi) (i = 1 to 7)
(1) Do NOT set the register related to the high-speed on-chip oscillator division select (FRA2) or registers related to
frequency adjustment (FRA1 and FRA3 to FRA7).
2-1-2. Register Settings Related to Timer RA
2-1-2-1. High-Speed On-chip Oscillator Control Register 0 (FRA0)
(1) Do NOT set the FRA01 bit to 1 (high-speed on-chip oscillator selected for the fOCO clock) [refer to Figure 2-1]. The
high-speed on-chip oscillator clock cannot be selected as the timer RA count source.
2-1-3 Register Settings Related to Timer RC
2-1-3-1. Timer RC Control Register 1 (TRCCR1)
(1) Do NOT set bits TCK2 to TCK0 to 110b (fOCO40M selected as the timer RC count source) [refer to Figure 2-3].
(2) Do NOT set bits TCK2 to TCK0 to 111b (fOCO-F selected as the timer RC count source) [refer to Figure 2-3].
2-1-3-2. High-speed On-Chip Oscillator Control Register 0 (FRA0)
(1) Do NOT set the FRA03 bit to 1 (fOCO-F divided by 128 selected as the fOCO 128 clock) [refer to Figure 2-1]. For the
timer RC input-capture function, fOCO-F divided by 128 cannot be selected for the input-capture trigger input of the TRCGRA
register.
2-1-4. Register Settings Related to Timer RD
2-1-4-1. Timer RD Control Register 0, 1 (TRDCR0, TRDCR1)
(1) Do NOT set bits TCK2 to TCK0 to 110b (fOCO40M selected as the timer RD count source) [refer to Figure 2-4].
(2) Do NOT set bits TCK2 to TCK0 to 111b (fOCO-F selected as the timer RD count source) [refer to Figure 2-4].
2-1-4-2. High-speed On-Chip Oscillator Control Register 0 (FRA0)
(1) Do NOT set the FRA03 bit to 1 (fOCO-F divided by 128 cannot be selected for the input-capture trigger input of the
TRDGRA0 register [refer to Figure 2-1]. For the timer RD input-capture function, fOCO-F divided by 128 cannot be selected for
the input-capture trigger input of the TRDGRA register.
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