UPD70741GC-25-8EU Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD70741GC-25-8EU

V821™ 32-/16-BIT MICROPROCESSOR

NEC => Renesas Technology 

µPD70741

2.9 Watchdog Timer (WDT)

This block incorporates an 8-bit watchdog timer to detect a program hanging up or system errors. If the watchdog

timer overflows, the WDTOUT pin becomes active.

2.10 Clock Generator (CG)

Supplies clock pulses at a frequency five times greater than that of the oscillator connected to pins X1 and X2 (when

the built-in PLL is being used) or at half the frequency (when the built-in PLL is not being used) of the operating clock

pulses for the CPU. Also, instead of connecting an oscillator, external clock pulses can be input.

2.11 Bus Arbitration Unit (BAU)

Arbitrates any contention over bus mastership between the bus masters (CPU, DRAMC, DMAC, external bus

master). Bus mastership can be switched in each bus cycle and also in the idle state.

2.12 Port

Port 0 provides a total of ten input/output port pins. The pins can be used as either port or control pins.

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