UPD78F9234MC-5A4-A Datasheet, PDF (16/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 1 OVERVIEW
1.1 Features
O 78K0S CPU core
O ROM and RAM capacities
Item
Part number
Program Memory (Flash Memory)
Memory (Internal High-Speed RAM)
μPD78F9232
4 KB
256 bytes
μPD78F9234
8 KB
O Minimum instruction execution time: 0.2 μs (with 10 MHz@4.0 to 5.5 V operation)
O Clock
• High-speed system clock … Selected from the following three sources
- Ceramic/crystal resonator:
2 to 10 MHz (Standard product, (A) grade product)
2 to 8 MHz ((A2) grade product)
- External clock:
2 to 10 MHz (Standard product, (A) grade product)
2 to 8 MHz ((A2) grade product)
- High-speed internal oscillator: 8 MHz ±3% (−10 to +80°C),
8 MHz ±5% (Standard product, (A) grade product: −40 to +85°C,
(A2) grade product: −40 to +125°C)
• Low-speed internal oscillator 240 kHz (TYP.) … Watchdog timer, timer clock in intermittent operation
O I/O ports: 26 (CMOS I/O: 24, CMOS input: 1, CMOS output: 1)
O 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
O Serial interface: UART (LIN (Local Interconnect Network) bus supported) 1 channel
O On-chip multiplier: 8 bits × 8 bits = 16 bits
O 10-bit resolution A/D converter: 4 channels
O On-chip power-on-clear (POC) circuit (A reset is automatically generated when the voltage drops to 2.1 V (TYP.)
or below.)
O 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
O Single-power-supply flash memory
• Flash self programming enabled
• Software protection function: Protected from outside party copying (no flash reading command)
• Time required for writing by dedicated flash memory programmer: Approximately 3 seconds (4 KB)
∗ Flash programming on mass production lines supported
O 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
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User’s Manual U17446EJ5V0UD