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C513A-2RN Datasheet(PDF) 8 Page - Siemens Semiconductor Group |
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C513A-2RN Datasheet(HTML) 8 Page - Siemens Semiconductor Group |
8 / 43 page Semiconductor Group 8 C511 / C513 Table 3 Pin Definitions and Functions Symbol Pin Number I/O*) Function P-LCC- 44 P-MQFP- 44 P1.7-P1.0 9-2 2 3 4 5 6 7 3-1, 44-40 40 41 42 43 44 1 I/O Port 1 is a bidirectional I/O port with internal pull-up resistors. Port 1 pins that have 1s written to them are pulled high by the internal pullup resistors, and in that state can be used as inputs. As inputs, port 1 pins being externally pulled low will source current ( I IL, in the DC characteristics) because of the internal pullup resistors. Port 1 also contains the timer 2 and SSC pins as secondary function. In general the output latch corresponding to a secondary function must be programmed to a one (1) for that function to operate. For the outputs of the SSC (SCLK, STO) special circuitry is implemented, providing true push-pull capability. The STO output in addition will have true tristate capability. When used for SSC inputs, the pull-up resistors will be switched off and the inputs will float (high ohmic inputs). The alternate functions are assigned to port 1, as follows: P1.0 T2 Input to counter 2 1) P1.1 T2EX Capture -Reload trigger of timer 2 1) Up-Down count P1.2 SCLK SSC Master Clock Output SSC Slave Clock Input P1.3 SRI SSC Receive Input P1.4 STO SSC Transmit Output P1.5 SLS Slave Select Input 1) not available in the C511/511A *) I = Input O = Output |
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