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MPC89L515AF Datasheet(PDF) 4 Page - Megawin Technology Co., Ltd |
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MPC89L515AF Datasheet(HTML) 4 Page - Megawin Technology Co., Ltd |
4 / 38 page 4 MPC89x515A Data Sheet MEGAWIN Pin Description Pin Definition Pin Number Pin Name DIP-40 PLCC-44 PQFP-44 Type Description P0.0 (AD0) P0.1 (AD1) P0.2 (AD2) P0.3 (AD3) P0.4 (AD4) P0.5 (AD5) P0.6 (AD6) P0.7 (AD7) 39 38 37 36 35 34 33 32 43 42 41 40 39 38 37 36 37 36 35 34 33 32 31 30 B Port0 is an open-drain, bi-directional IO port. When 1s are written to Port0, they become high-impedance inputs. Port0 is also multiplexed with low-order address or data bus during accesses to external program and data memory. P1.0 (T2) P1.1 (T2EX) P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 1 2 3 4 5 6 7 8 2 3 4 5 6 7 8 9 40 41 42 43 44 1 2 3 BU General-purposed I/O with weak pull-up resistance inside. When 1s are written into Port1, the strong output driving PMOS only turn-on two clock periods and then the weak pull-up resistance keep the port high. P1.0 is also used as one of event sources for timer2, or output carrier of timer2, alias T2. P1.1 is also used as one of interrupt-controlling sources for time2, alias T2EX. P2.0 (A8) P2.1 (A9) P2.2 (A10) P2.3 (A11) P2.4 (A12) P2.5 (A13) P2.6 (A14) P2.7 (A15) 21 22 23 24 25 26 27 28 24 25 26 27 28 29 30 31 18 19 20 21 22 23 24 25 BU Port2 is an 8-bit bi-directional I/O port with pull-up resistance. Except being as GPIO, Port2 emits the high-order address byte during accessing to external program and data memory. P3.0 (RXD) P3.1 (TXD) P3.2 (INT0) P3.3 (INT1) P3.4 (T0) P3.5 (T1) P3.6 (/WR) P3.7 (/RD) 10 11 12 13 14 15 16 17 11 13 14 15 16 17 18 19 5 7 8 9 10 11 12 13 BU General-purposed I/O with weak pull-up resistance inside. When 1s are written into Port1, the strong output driving PMOS only turn-on two clock periods and then the weak pull-up resistance keep the port high. Port3 also serves other special functions of this device. P3.0 and P3.1 act as receiver and transceiver of the data for UART function block, Alias RXD and TXD. |
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