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  • 科茂隆 >> NEC系列IC解密 >> UPD78F0556解密      

    UPD78F0556解密

      78K0 CPU core
      Low power consumption (VDD = 3.0 V)
      * Internal high-speed oscillation mode:   220
      * STOP mode:   0.65  (TYP.) (at fIL = 30 kHz operation)
      Clock
      * High-speed system clock … Selected from the following three sources
      - Ceramic/crystal oscillator:   1 to 10 MHz
      - External clock:   1 to 10 MHz
      - Internal high-speed oscillator:   4 MHz ± 2 % (-20 to +70°C), or 8 MHz ± 3 %(-40 to +85°C)
      * Low-speed system oscillator   30 kHz ± 10 % … Watchdog timer, timer clock in intermittent operation
      * Subsystem clock:   Clock to operate the real-time counter mainly
      Timer
      * 16-bit timer/event counter …  PPG output, capture input, external event counter input
      * 8-bit timer H …  PWM output
      * 8-bit timer/event counter 5 … PWM output, external event counter input
      * Watchdog timer … Operable with low-speed internal oscillation clock
      * Real-time counter … Available to count up in year, month, week, day, hour, minute, and second units
      Serial interface
      * UART …  Asynchronous 2-wire serial interface
      * IICA … Clock synchronous 2-wire serial interface, multimaster supported, standby can be released upon address match in slave mode
      * CSI … Clock synchronous 3-wire serial interface
      10-bit resolution A/D conversion:4ch
      Operational amplifier (products with operational amplifier only):1ch
      Power-on-clear (POC) circuit
      Low-voltage detector (LVI) (An interrupt/reset (selectable) is generated when the detection voltage is reached))
      * Detection voltage: Selectable from sixteen levels between 1.91 and 4.22 V  Single-power-supply flash memory
      * Flash self programming enabled
      * Software protection function: Protected from outside party copying (no flash reading command)
      Safety function
      * Watchdog timer operated by clock independent from CPU
      … A hang-up can be detected even if the system clock stops
      * Supply voltage drop detectable by LVI
      … Appropriate processing can be executed before the supply voltage drops below the operation voltage
      * Equipped with option byte function
      … Important system operation settings set in hardware
      On-chip debug function …Available to control for the target device, and to reference memory
      Assembler and C language supported
      Development tools
      * Support for full-function emulator (IECUBE), and simplified emulator (MINICUBE2)
      Power supply voltage: VDD = 1.8 to 5.5 V
      Operating ambient temperature: TA = -40 to +85°C
     
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