Mitsubishi Electric M32R Series User Manual page 30

1
Table 1.3.1 Description of the 32170 Pin Function (1/6)
Type Pin Name Signal Name
Power VCCE
supply
VCCI
VDD
FVCC
VSS
Clock XIN,
XOUT
BCLK/WR System clock
OSC-VCC Power supply
OSC-VSS Ground
VCNT
Reset RESET
Mode MOD0
MOD1
Address A11 – A30 Address
Bus
Note: For boot mode, refer to Chapter 6, "Internal Memory."
Input/Output Function
Power supply —
Power supply —
RAM power supply —
FLASH power supply —
Ground —
Clock Input
Output
Output
—
—
PLL control Input
Reset Input
Mode Input
Output
Bus
1-12
Power supply to external I/O ports (5 V).
Power supply to internal logic (3.3 V).
Power supply for internal RAM backup (3.3 V).
Power supply for internal flash memory (3.3 V).
Connect all VSS to ground (GND).
Clock input/output pins. These pins contains a PLL-based
frequency multiplier circuit. Apply a clock whose frequency
is 1/4 the operating frequency. (When using 40 MHz CPU
clock, XIN input = 10.0 MHz)
This pin outputs a clock whose frequency is twice that of
external input clock. (When using 10 MHz external input
clock, BCLK output = 20 MHz). Use this output when
external operation needs to be synchronized.
Power supply for PLL circuit. Connect OSC-VCC to the
power supply rail.
Connect OSC-VSS to ground.
This pin controls the PLL circuit. Connect a resistor and
capacitor to it. (For external circuits, refer to Section 18.1.1,
"Example of an Oscillator Circuit.")
This pin resets the internal circuit.
These pins set operation mode.
MOD0 MOD1
0 0 Single-chip mode
0 1 Extended external mode
1 0 Processor mode
0 0 (Boot mode)
1 1 (Reserved)
The device has 20 address lines (A11-A30) to allow two
channels of up to 2 MB of memory space to be added
external to the chip. A31 is not output.
OVERVIEW
1.3 Pin Function
Mode
(Note)
Ver.0.10