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CHAPTER 1 OVERVIEW
conversion
•
Starting: Selectable from software, external trigger, and internal timer
Reload timer
•
16-bit timer: Three channels
•
Internal clock: 2-clock cycle resolution. Selectable from 2-, 8-, and 32-frequency division
mode
Other interval timers
•
16-bit timer: Three channels (U-Timer)
•
PWM timer: Four channels
•
Watchdog timer: One channel
Bit search module
•
Searches for the bit position that first changes between 1 and 0 beginning from MSB of a
word in one cycle.
Interrupt controller
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External interrupt input: Nonmaskable interrupt, normal interrupt × 4 (INT0 to INT3)
•
Internal interrupt causes: UART, DMAC, A/D, reload timer, PWM, UTIMER, and delayed
interrupt
•
Up to 16 priority levels are programmable for interrupts other than nonmaskable interrupts.
Reset types
•
Power-on reset, watchdog timer reset, software reset, and external reset
Power save mode
•
Sleep/stop mode
Clock control
•
Gear function: Desired operating clock frequencies can be set for the CPU and peripherals
independently.
A gear clock can be selected from 1/1, 1/2, 1/4, and 1/8 (or 1/2, 1/4, 1/8, and 1/16).
However, the operating clock frequency for peripherals cannot exceed 25 MHz.
Others
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Packages: QFP-100, LQFP-100, FBGA-112
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CMOS technology: 0.5 m
•
Power supply: 3.3 V plus or minus 0.3 V
•
254-kilobyte flash ROM: Can be read, written, and erased by a single power supply.
4
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