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Functional Overview
2.1 Functional Overview
Rev.1.04
2008.7.10
2-2
REJ10J1564-0104
2
2.1 Functional Overview
The M3A-HS85 is the SH7285 CPU board that has the functions listed in Table 2.1.1.
Table 2.1.1 lists the functional modules of M3A-HS85.
Table 2.1.1 Functional Modules of M3A-HS85
Section Function Content
2.2 CPU
SH7285
• Input(XIN) Clock: 12.5 MHz
• CPU Clock: Maximum 100 MHz
• Bus Clock: Maximum 50 MHz
• On-Chip Memory
- Flash Memory: 768 kBytes
- RAM: 32 kBytes
2.3 Memory
• SRAM : 2-Mbyte (16-bit bus width x 1pc.) (Not mounted)
*Can be mounted only when SH7285 is used in 3.3V.
• SDRAM : 16-Mbyte(16-bit bus width x 1pc.) (Not mounted)
*Can be mounted only when SH7285 is used in 3.3V.
• EEPROM : 128 kBits (Not mounted)
HN58X24128FPIE x 1 pc. (I
2
C bus connection)
2.4 Serial Port Interface Connects SCI0 or SCI3 of SH7285 to the serial port connector
2.5 I/O Ports Connects to the input/output ports of the SH7285
2.6 Power Supply Module Controls the system power supply of the M3A-HS85
2.7 USB Interface Connects USB pin of SH7285 to USB connector
2.8 Clock Module Controls the system clock
2.9 Reset Module Controls the device reset mounted on the M3A-HS85
2.10 Interrupt Switches Connect to the NMI pin, IRQ0 pin and test port
2.11 E10A-USB Interface SH7285 H-UDI/AUD interface
- Operational Specifications Connectors, Switches and LEDs
• SH7285 extension connector
• Switches and LEDs
• H-UDI connector
Detailed in Chapter 3.