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H8/3003 数据表(PDF) 337 Page - Renesas Technology Corp |
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H8/3003 数据表(HTML) 337 Page - Renesas Technology Corp |
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337 / 715 page ![]() Figure 10-11 Access to Timer Counter (CPU Reads TCNT, Lower Byte) 10.3.2 8-Bit Accessible Registers The registers other than the timer counters, general registers, and buffer registers are 8-bit registers. These registers are linked to the CPU by an internal 8-bit data bus. Figures 10-12 and 10-13 show examples of byte read and write access to a TCR. If a word-size data transfer instruction is executed, two byte transfers are performed. Figure 10-12 TCR Access (CPU Writes to TCR) On-chip data bus CPU H L Bus interface H L Module data bus TCNTH TCNTL On-chip data bus CPU H L Bus interface H L Module data bus TCR 319 |
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