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ST2204 датащи(PDF) 2 Page - Sitronix Technology Co., Ltd. |
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ST2204 датащи(HTML) 2 Page - Sitronix Technology Co., Ltd. |
2 / 24 page ST2204 Ver 0.6 2/24 2008/11/10 2 2.. G GE EN NE ER RA AL L D DE ES SC CR RIIP PT TIIO ON N The ST2204 is a 8-bit integrated microcontroller designed with CMOS silicon gate technology. The true static CPU core, power down modes and dual oscillators design makes the ST2204 suitable for power saving and long battery life designs. The ST2204 integrates various logic to support functions on-chip which are needed by system designers. This is also important for lower system complexity, small board size and, of course, shorter time to market and less cost. The ST2204 features the capacity of memory access of maximum 44M bytes which is needed by products with large data bases, and also DMA function for fast memory transfer. Six chip selects are equipped for direct connection to external ROM, SRAM, Flash memory or other devices. Maximum one single device of 16M bytes is possible. The ST2204 has 48 I/Os grouped into 6 ports, Port-A ~ Port-E and Port-L. Each pin can be programmed to input or output. There are two options: pull-up/down for inputs of Port-C and only pull-up for inputs of the other ports. In case of output, there are open-drain/CMOS options for outputs of PortC and only CMOS for the other ports. Port-A/B is designed for keyboard scan with de-bounce and transition triggered interrupt at Port-A, while Port-C/D/E/L are shared with other system functions. All the properties of I/O pins are still programmable when they are assigned to another function. This enlarges the flexibility of the usage of function signals. The ability of driving large LCD panels, up to 320x240, and hardware/software gray-level support may rich the display information and the diversity of contents as well. This is done with no need of external display RAM because of the internal memory sharing design. The variable LCD buffer design also make large panel size with little internal RAM possible. User may free major internal RAM for computing or temporary access while keeping the display content. The ST2204 equips serial communication ports of one UART and one SPI to perform different communications, ex.: RS-232 and IrDA, with system components or other products such as PC, Notebook, and popular PDA. Three clocking outputs can produce synthesized PWM signals or high frequency carrier for IR remote control. This helps products become more useful in our daily life. The built-in two channel PSG/one channel PWM DAC are for the production of key tone, melody, voice, and speech. Two dedicated pins with large driving capacity can drive a buzzer/speaker directly for minimum cost. The ST2204 has one Low Voltage Detector (LVD) for power management. The status of internal or external power can be detected and reported to the management software. Power bouncing during power on is a major problem when designing a reliable system. The ST2204 equips Low Voltage Reset function to keep whole system in reset status when power is low. After the power backs to normal, the system may recover its original states and keeps working correctly. With these integrated functions inside, the ST2204 single chip microcontroller is a right solution for PDA, translator, databank and other consumer products. Clock Generator OSC Clock Generator OSCX OSCI OSCXI OSCXO XIO VCC/GND TEST1/2 Power On Reset RESET A[22:0] D[7:0] 8-bit External Memory Bus RD W R PSG / PWM DAC PSGO/PSGOB 8-bit Static CPU ROM 512K bytes Baud Rate Generator DMA Base Timer 8-bit SRAM 10K bytes WDT Interrupt Controller Bank Control Logic PA7~0 Port-A De-bounce Logic Transition Detector PB7~0 Port-B UART with IrDA Mode SPI INTX/PC0 Port-C SCK/PC1 MISO/PC2 MOSI/PC3 TXD0/PC6 Port-C RXD0/PC7 Port-C ICE2/3 Chip Select Logic MMD/CS0 Port-D Timer 0/1 8-bit Clocking Output Port-E TCO0/PE0 PE7~2 Port-E LCD Controller Port-L LD[3:0]/PL3~0 CP/PL4 AC/PL5 LOAD1/PL6 FLM/PL7 TXD1/PD6 RXD1/PD7 Port-D /PC5 DATA_READY /PC4 SS 0 ~ /PD4 1 ~ CS5 /PD5 /A23 CS6 POFF BLANK TCO1/PE1 BCO/PE2 PVCC/PGND XMD LOAD2 Low Voltage Detector VIN Low Voltage Reset /ICE1 LVR FIGURE 2-1 ST2204 Block Diagram |
Аналогичный номер детали - ST2204 |
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Аналогичное описание - ST2204 |
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