Mitsubishi Electric M32R Series User Manual page 23

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(4) High-speed serial I/O
• The 32170 incorporates 6 channels of serial I/O, which can be set for clock-synchronized
serial I/O or UART.
• When set for clock-synchronized serial I/O, the data transfer rate is a high 2 Mbits per second.
• When data reception is completed or the transmit buffer becomes empty, the serial I/O can
generate a DMA transfer request signal.
(5) Built-in Real-Time Debugger (RTD)
• The Real-Time Debugger (RTD) provides a function for the M32R/E's internal RAM to be
accessed directly from an external device. The debugger communicates with external devices
through its exclusive clock-synchronized serial I/O.
• By using the RTD, you can read the contents of the internal RAM or rewrite its data from an
external device independently of the M32R.
• The debugger can generate an RTD interrupt to notify that RTD-based data transmission or
reception is completed.
(6) Eight-level interrupt controller
• The interrupt controller manages interrupt requests from each internal peripheral I/O by
resolving interrupt priority in eight levels including an interrupt-disabled state. Also, it can
accept external interrupt requests due to power-down detection or generated by a watchdog
timer as a System Break Interrupt (SBI).
(7) Three operation modes
• The M32R/E has three operation modes-single-chip mode, extended external mode, and
processor mode. The address space and external pin functions of the M32R/E are switched
over according to a mode in which it operates. The MOD0 and MOD1 pins are used to set a
mode.
(8) Wait controller
• The wait controller supports access to external devices by the M32R. In all but single-chip
mode, the extended external area provides 4 Mbytes of space.
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OVERVIEW
1.1 Outline of the 32170
Ver.0.10