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Operational Specifications
3.2.4 Switches and LEDs
Rev.1.00
Oct 09, 2008 3-20
REJ11J0021-0100
3
3.2.4 Switches and LEDs
The M3A-HS37 is provided with six switches and seven LEDs.
Table 3.2.4 lists switches on the M3A-HS37.
Table 3.2.4 Switches on the M3A-HS37
No. Function Remarks
SW1 System power on/off switch -
SW2 System reset input switch Refer to Section 2.9 for details.
SW3 User DIP switches (4/package)
SW3-1 OFF: PF12 = ”H” ON: PF12 = ”L”
SW3-2 OFF: PF13 = ”H” ON: PF13 = ”L”
SW3-3 OFF: PF14 = ”H” ON: PF14 = ”L”
SW3-4 OFF: PF15 = ”H” ON: PF15 = ”L”
PF12,PF13,PF14, and PF15 are pulled up.
Refer to Section 2.5 for details.
SW4 System setting DIP switches (4/package) Refer to Table 3.2.5 for the functions
SW5 NMI input switch Refer to Section 2.10 for details.
SW6 IRQ2 input switch Refer to Section 2.10 for details.
Table 3.2.5 lists the functions of the switch (SW4). The SH7137 operating mode is set by the combinations of the pins FEW,
MD0, and MD1. Table 3.2.6 lists the SH7137 operating mode setting.
Table 3.2.5 Functions of Switch (SW4)
No. Setting Function
OFF FWE="H" (On-chip flash memory is write- and erase-protected) SW4-1
FWE
ON FWE="L" (On-chip flash memory is write- and erase-enabled)
OFF MD1 pin state is "H" SW4-2
MD1
ON MD1 pin state is "L"
OFF MD0 pin state is "H" SW4-3
MD0
ON MD0 pin state is "L"
Operating mode setting
(Refer to
Table 3.2.6)
OFF LED Vcc OFF SW4-4
LED
ON LED Vcc ON
indicates the default setting.
Note: Refer to Figure 2.5.1 for LED Vcc.
Table 3.2.6 SH7137 Operating Mode Setting
SH7137 Operating Mode
SW4-1
(FWE)
SW4-2
(MD1)
SW4-3
(MD0)
No. Name
ON ON ON Mode 0 MCU expansion mode 0 (On-chip ROM disabled, CS0 space: 8-bit bus)
ON OFF ON Mode 2 MCU expansion mode 2 (On-chip ROM enabled, CS0 space: 8-bit bus)
ON OFF OFF Mode 3 Single chip mode (On-chip ROM enabled)
OFF ON ON Mode 4 * Boot mode (On-chip ROM enabled)
OFF ON OFF Mode 5 * User boot mode (On-chip ROM enabled, CS0 space: 8-bit bus)
OFF OFF ON Mode 6 * User program mode (On-chip ROM enabled, CS0 space: 8-bit bus)
OFF OFF OFF Mode 7 * User program mode (On-chip ROM enabled)
Indicates the default setting.
Note: These are the programming mode of the flash memory