T48C893 Datasheet | Atmel

Features / Benefits D 4-Kbyte EEPROM program memory D EEPROM programmable options D Read protection for the EEPROM program memory D 16 bidirectional I/Os D Up to 7 external / internal interrupt sources D 8 hardware and software interrupt priorities D Multifunction timer/counter with prescaler/interval timer D Programmable system-clock with prescaler and five different clock sources V SS VDD D Wide supply voltage range (1.8 to 6.5 V) D Very low sleep current (< 1 µA) D 2 D 256 512 bit EEPROM data memory 4 bit RAM data memory D Synchronous serial interface (2-wire, I2C, 3-wire) D Watchdog, POR and brown-out function D Voltage monitoring incl. Lo_BAT detect D Multi-chip link for U3280M OSC1 OSC2 Brown-out protect. RESET Voltage monitor External input VMI BP10 Port 1 BP13 BP20/NTE Data direction Port 2 BP21 BP22 BP23 External RC Crystal oscillators oscillators clock input Clock management UTCM Timer 1 interval- and watchdog timer Timer 2 8/12-bit timer with modulator SSI Serial interface Timer 3 8-bit timer / counter with modulator and demodulator T2I T2O SD SC T3O T3I EEPROM 4 K x 8 bit 256 x 4 bit MARC4 4-bit CPU core I/O bus Data direction + interrupt control Port 5 Data direction + alternate function Port 4 Data dir. + alt. function Port 6 EEPROM 2 32 16 bit BP50 BP52 BP40 BP42 INT1 T2O BP43 INT6 INT3 BP53 BP51 SC BP41 INT3 VMI INT1 INT6 SD T2I BP60 T3O BP63 T3I Figure 1. Block diagram T48C893 Rev. A4, 22-Jan-02 1 (82) VDD BP40/INT3/SC BP53/INT1 BP52/INT1 BP51/INT6 BP50/INT6 OSC1 OSC2 BP60/T3O BP10 1 2 3 4 5 6 7 8 9 10 20 19 18 17 VSS BP43/INT3/SD BP42/T2O BP41/VMI/T2I BP23 BP22 BP21 BP20/NTE BP63/T3I BP13 16 15 14 13 12 11 Figure 2. Pinning SSO20 package ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ...