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ST10R272L Datasheet(PDF) 6 Page - STMicroelectronics |
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ST10R272L Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 77 page 6/77 ST10R272L - PIN DESCRIPTION P3.0 – P3.13 P3.15 8-21 22 I/O I/O 5T 5T A 15-bit (P3.14 is missing) bidirectional I/O port. Port 3 is bit- wise programmable for input or output via direction bits. For a pin configured as input, the output driver is put into high- impedance state. Port 3 outputs can be configured as push/ pull or open drain drivers. The following pins have alternate functions: 9 O 5T P3.1 T6OUT GPT2 Timer T6 toggle latch output 10 I 5T P3.2 CAPIN GPT2 Register CAPREL capture input 11 O 5T P3.3 T3OUT GPT1 Timer T3 toggle latch output 12 I 5T P3.4 T3EUD GPT1 Timer T3 ext.up/down ctrl.input 13 I 5T P3.5 T4IN GPT1 Timer T4 input for count/gate/ reload/capture 14 I 5T P3.6 T3IN GPT1 Timer T3 count/gate input 15 I 5T P3.7 T2IN GPT1 Timer T2 input for count/gate/ reload/capture 18 O 5T P3.10 TxD0 ASC0 clock/data output (asyn./syn.) 19 I/O 5T P3.11 RxD0 ASC0 data input (asyn.) or I/O (syn.) 20 O 5T P3.12 BHE Ext. Memory High Byte Enable Signal O5T WRH Ext. Memory High Byte Write Strobe 22 O 5T P3.15 CLKOUT System clock output (=CPU clock) Table 1 Pin definitions 1 |
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