參數(shù)資料
型號(hào): 32170
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 32-BIT CMOS MICROCOMPUTER
中文描述: 單芯片32位CMOS微機(jī)
文件頁(yè)數(shù): 10/49頁(yè)
文件大?。?/td> 561K
代理商: 32170
Mitsubishi Microcomputers
10
2001-5-14 Rev.1.0
SINGLE-CHIP 32-BIT CMOS MICROCOMPUTER
32170 Group, 32174 Group
Table 5 Description of Pin Function (1/5 )
Type
Pin Name
Description
Input/Output
Function
Power
VCCE
Power supply
Supplies power (5 V or 3.3V) to external I/O ports.
supply
VCCI
Power supply
Supplies power (3.3 V) to the internal logic.
VDD
RAM power supply
nternal RAM backup power supply (3.3 V).
FVCC
Flash power supply —
Internal flash memory backup power supply (3.3 V).
VSS
Ground
Connect all VSS pins to ground (GND).
Clock
XIN,
Clock
Input
Clock input/output pins. These pins contain a PLL-based
XOUT
Output
frequency multiply-by-4, so input the clock whose frequency is quarter
the operating frequency. (XIN input = 10 MHz when CPU clock operates
at 40 MHz)
BCLK /
WR
System clock
Output
When this signal is System Clock(BCLK), it outputs a clock whose is twice
that of
external inpout clock. (BCLK output = 20 MHz when CPU clock operates at 40
MHz). Use this clock when circuits are synchronized externally.
When this signal is Write(WR),during external write access it indicates the valid
data on the data bus to transfer.
OSC-VCC
Power supply
Power supply to the PLL circuit. Connect OSC-VCC to the power supply(3.3V)
OSC-VSS
Ground
Connect OSC-VSS to ground.
VCNT
______
RESET
PLL control
Input
This pin controls the PLL circuit. Connect a resistor and capacitor to this pin.
Reset
Reset
Input
This pin resets the internal circuits.
Mode
MOD0
Mode
Input
These pins set an operation mode.
MOD1
MOD0 MOD1
Mode
0
0
Single-chip mode
0
1
Expanded external mode
1
0
Processor mode
0
0
(Boot mode) (Note)
1
1
(Reserved)
Address
bus
A11-A30
Address
bus
Output
20 lines of address bus (A11-A30) are provided to accommodate two
channels of 2 MB memory space (max.) connected external to the chip.
A31 is not output.
In the write cycle, of the 16-bit data bus the valid byte positions to write are
output as BHW/ BHE and BLW/ BLE. In read cycle, data on the entire 16-bit
data bus is read. However, only the data at the valid byte positions are
transferred to the M32R’s internal circuit.
Data bus
DB0-DB15
Data bus
Input/output
This 16-bit data bus connects to external device.
Note: FP pin should be “H” level in Boot Mode.
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