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T81L0010A-BD Datasheet(PDF) 9 Page - Taiwan Memory Technology |
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T81L0010A-BD Datasheet(HTML) 9 Page - Taiwan Memory Technology |
9 / 17 page TE CH tm T81L0010A TM Technology Inc. reserves the right P. 9 Publication Date: JAN. 2006 to change products or specifications without notice. Revision:B 9.2. External Register Table ( for LVR, High/ Normal Driving) Register Address A15…A5-A0 Hex Name Comments 100… 0010 1011 802bH PWMC2 LVR (Low Voltage Reset)* 100… 0011 0000 8030H Port3 HDS Port3 I/O high driving set** 100… 0011 0010 8032H Port1 HDS Port1 I/O high driving set** Note : * LVR (Low Voltage Reset) address : 802bH, read/write MSB LSB Bit 7 Bit 6 Bit5 Bit 4 Bit 3 Bit 2 Bit1 Bit 0 LVR[7] Reserved LVR[7] : if LVR[7] write ‘1’, low voltage reset function enable(under 2.1V reset). default is ‘0’, low voltage reset function disable. ** Port I/O high driving set if write ‘0’ = set I/O to high driving current mode. if write ‘1’ = set I/O to normal driving current mode. default is set ‘1’. Port 3 high driving address : 8030H MSB LSB Bit 7 Bit 6 Bit5 Bit 4 Bit 3 Bit 2 Bit1 Bit 0 Port3.7 Port3.5 Port3.4 Port3.3 Port3.2 Port3.1 Port3.0 Port 1 high driving address : 8032H MSB LSB Bit 7 Bit 6 Bit5 Bit 4 Bit 3 Bit 2 Bit1 Bit 0 Port1.7 Port1.6 Port1.5 Port1.4 Port1.3 Port1.2 Port1.1 Port1.0 9.3. I/O Ports Port1 Port 1 is an 8-bit bi-directional I/O port with internal pull-ups. Port 1 output buffers can sink/source four external TTL device inputs. When port 1 pins are written as 1’s, these pins are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 1 pins that are externally being pulled low will source current because of the internal pull-ups. Port 3 Port 3 is an 8-bit bi-directional I/O port with internal pull-ups. Port 3 output buffers can sink/source four external TTL device inputs. When port 3 pins are written as 1’s, these pins are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current because of the internal pull-ups. Port 3 also serves the functions of various special features, as listed below: P3.0 RXD (serial input port) P3.1 TXD (serial output port) P3.2 INT0 (external interrupt 0) P3.3 INT1 (external interrupt 1) P3.4 T0 (timer 0 external input) P3.5 T1 (timer 1 external input) P3.7 General purpose I/O only |
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