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SPMC802B-PD09 Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers |
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SPMC802B-PD09 Datasheet(HTML) 8 Page - List of Unclassifed Manufacturers |
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8 / 27 page  SPMC802B In SPMC802B, the output mode on PB2 and PB1 can be an open-drain pin with slow transition by program. To achieve the slow transition function, programming the bit slowe in RPA to '1' will enforce the output high to low transition time to 250ns ± 20% with 50pf pad loading at 2.0MHz CPU frequency. PB7 can be a PWM waveform output. PB6 can be an external clock or event input for Timer2. PB5 is used as external interrupt input with falling-edge trigger. PB4 can be used as external active-low reset input by enabling the configurable option. PB0 can be reference voltage input for Comparator function. In case of using PB0 as external reference voltage input, the resistive pull-up/down should be disabled. The more details are described in related sections. The corresponding pads are assigned for SPMC802B as following: (VDD = 5.0V) PIN Rp IN OUT Special Function PB7 100K Up/Down@rpb7 8/8mA PWM waveform output PB6 100K Up/Down@rpb6 8/8mA External clock/event input PB5 No Pull-Up/Down Schmitt-Trigger -/8mA IRQ0 interrupt input PB4 100K Up@rpb4 Schmitt-Trigger 8/8mA External nRESET input PB3 100K Up/Down@rpb3 8/8mA PB2 100K Up@rpb2 -/20mA PB1 100K Up@rpb1 -/20mA PB0 100K Up/Down@rpb0 8/8mA Comparator Vref input 5.3. Port C Group The I/O port C has 8 programmable I/Os that are controlled by data register PC, direction control register DPC, and pull-up/down resistance control register RPC. DPC is used to control the pad I/O attribute. Setting the bit(s) to '1' will enforce the corresponding pad(s) to output mode. It is a write-only register. PC is used to store the data contents for output. Reading PC will get the stored data when corresponding bit of DPC is set as output mode, or will get the pad status if it is in input mode. There is a built-in Pull-Up/Down resistor on each pad. These pull-up/down resistors should be selected either pull-up or pull-down by configurable option first, and then can be controlled by users' program through RPC. PC7:0 are used as external interrupt inputs. The more details are described in section Interrupt. The corresponding pads are assigned for SPMC802B as following: (VDD = 5.0V) PIN Rp IN OUT Special Function PC7 100K Up/Down@rpc7 8/8mA IRQ2 interrupt input PC6 100K Up/Down@rpc6 8/8mA IRQ2 interrupt input PC5 100K Up/Down@rpc5 8/8mA IRQ2 interrupt input PC4 100K Up/Down@rpc4 8/8mA IRQ2 interrupt input PC3 100K Up/Down@rpc3 8/8mA IRQ2 interrupt input PC2 100K Up/Down@rpc2 8/8mA IRQ2 interrupt input PC1 100K Up/Down@rpc1 8/8mA IRQ2 interrupt input PC0 100K Up/Down@rpc0 8/8mA IRQ2 interrupt input © Sunplus Technology Co., Ltd. Proprietary & Confidential 8 AUG. 07, 2002 Version: 1.0 |
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