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UPD754244GS Datasheet(PDF) 3 Page - NEC |
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UPD754244GS Datasheet(HTML) 3 Page - NEC |
3 / 88 page 3 µPD754144, 754244 Functional Outline Parameter µPD754144 µPD754244 Instruction execution time • 4, 8, 16, 64 µs • 0.95, 1.91, 3.81, 15.3 µs (at fcc = 1.0-MHz operation) (at fx = 4.19-MHz operation) • 0.67, 1.33, 2.67, 10.7 µs (at fx = 6.0-MHz operation) On-chip Mask ROM 4096 × 8 bits (0000H-0FFFH) memory RAM 128 × 4 bits (000H-07FH) EEPROM 16 × 8 bits (400H-41FH) System clock oscillator RC oscillator Crystal/ceramic oscillator (External resistor and capacitor) General-purpose register • 4-bit operation: 8 × 4 banks • 8-bit operation: 4 × 4 banks Input/output CMOS input 4 On-chip pull-up resistor can be specified by mask option. port CMOS input/output 9 On-chip pull-up resistor connection can be specified by means of software. Total 13 Start-up time after reset 56/fcc 2 17/fx, 215/fx (selected by mask option) Stand-by mode release time 2 9/fcc 2 20/fx, 217/fx, 215/fx, 213/fx (selected by the setting of BTM) Timer 4 channels • 8-bit timer counter (can be used as 16-bit timer counter) : 3 channels • Basic interval/watchdog timer : 1 channel Bit sequential buffer 16 bits Vectored interrupt External: 1, Internal: 5 Test input External: 1 (key return reset function available) Standby function STOP/HALT mode Operating ambient temperature TA = –40 to +85 °C Operating supply voltage VDD = 1.8 to 6.0 V Package • 20-pin plastic SOP (300 mil, 1.27-mm pitch) • 20-pin plastic shrink SOP (300 mil, 0.65-mm pitch) |
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