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H8S/2225 数据表(PDF) 406 Page - Renesas Technology Corp |
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H8S/2225 数据表(HTML) 406 Page - Renesas Technology Corp |
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406 / 1071 page  Section 10 I/O Ports Rev. 5.00 Aug 08, 2006 page 320 of 982 REJ09B0054-0500 • P33/TxD1/SCL1 The pin functions are switched as shown below according to the combination of the ICE bit*2 in ICCR_1 of IIC_1, the TE bit in SCR_1 of SCI_1, and the P33DDR bit. SCL1 functions as NMOS open drain output and can drive bus directly. ICE*2 01 TE 01 P33DDR 01 Pin functions P33 input pin P33 output pin* 1 TxD1 output pin* 1 SCL1 I/O pin* 2 Notes: 1. When P33ODR is set to 1, it functions as NMOS open drain output. 2. Not available in the H8S/2237 Group and H8S/2227 Group. • P32/SCK0/SDA1/IRQ4 The pin functions are switched as shown below according to the combination of the ICE bit*3 in ICCR_1 of IIC_1, the C/ A bit in SMR_0 of SCI_0, CKE1 and CKE0 bits in SCR, and the P32DDR bit. To use this port as SDA1 input pin, clear the C/ A bit, CKE0 bit, and CKE1 bit to 0. The SDA1 functions as NMOS open drain output and can drive bus directly. ICE* 3 01 CKE1 0 1 0 C/ A 01 0 CKE0 0 1 0 P32DDR 0 1 P32 input pin P32 output pin* 1 SCK0 output pin* 1 SCK0 output pin* 1 SCK0 input pin SDA1 I/O pin* 3 Pin functions IRQ4 Input*2 Notes: 1. When P32ODR is set to 1, it functions as NMOS open drain output. 2. When this pin is used as an external interrupt pin, do not specify other functions. 3. Not available in the H8S/2237 Group and H8S/2227 Group. • P31/RxD0 The pin functions are switched as shown below according to the combination of the RE bit in SCR_0 of SCI_0 and the P31DDR bit. RE 01 P31DDR 01 Pin functions P31 input pin P31 output pin* RxD0 input Note: * When P31ODR is set to 1, it functions as NMOS open drain output. |
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