UPD78F9222 (F9222)

Микросхема UPD78F9222 (µPD78F9222, маркировка F9222)

UPD78F9222 - 8-Bit Single-Chip Microcontrollers, SSOP-20

 

Особенности

• 78K0S CPU core
• ROM and RAM capacities
• Minimum instruction execution time: 0.2 µs (with 10 MHz@4.0 t5.5 V operation)
• Clock
• High-speed system clock … Selected from the following three sources
• - Ceramic/crystal resonator: 2 t10 MHz (Standard product, (A) grade product) 2 t8 MHz ((A2) grade product)
• - External clock: 2 t10 MHz (Standard product, (A) grade product)
•  2 t8 MHz ((A2) grade product)
• - High-speed internal oscillator: 8 MHz ±3% (−10 t+80°C),
•  8 MHz ±5% (Standard product, (A) grade product: −40 t+85°C, (A2)  grade product: −40 t+125°C)
• Low-speed internal oscillator 240 kHz (TYP.) … Watchdog timer, timer clock in intermittent operation
• I/ports: 17 (CMOS I/O: 15, CMOS input: 1, CMOS output: 1)
• Timer: 4 channels
• 16-bit timer/event counter: 1 channel … Timer output × 1, capture input × 2
• 8-bit timer: 2 channels … PWM output × 1
• Watchdog timer: 1 channel … Operable with low-speed internal oscillation clock
• Serial interface: UART (LIN (Local Interconnect Network) bus supported) 1 channel
• 10-bit resolution A/D converter: 4 channels
• On-chip power-on-clear (POC) circuit (A reset is automatically generated when the voltage drops t2.1 V (TYP.) or below)
• On-chip low voltage detector (LVI) circuit (An interrupt/reset (selectable) is generated when the detection voltage is reached)
• Detection voltage: Selectable from ten levels between 2.35 and 4.3 V
• Single-power-supply flash memory
• Flash self programming enabled
• Software protection function: Protected from outside party copying (nflash reading command)
• Time required for writing by dedicated flash memory programmer: Approximately 3 seconds (4 KB)
• 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
• Assembler and C language supported