Filter
Top Products
Operational Specifications
3.2.4 Switch and LED Functions
Rev.1.0 Dec 15, 2006 3-20
REJ10J0917-0100
3
Table3.2.6 lists functions of switch SW4. SH7149 operating mode is determined by the setting of the MD0, MD1 and
FWE pins. Table3.2.7 lists the selection of SH7149 operating modes.
Table3.2.6 Functions of Switch SW4
No. Setting Function
OFF FWE=H (Releasing the writing/erasing protects of on-chip flash memory) SW4-1
FWE
ON FWE=L (Setting the writing erasing protects of on-chip flash memory)
OFF MD1 pin state “H” SW4-2
MD1
ON MD1 pin state “L”
OFF MD0 pin state “H” SW4-3
MD0
ON MD0 pin state “L”
CPU mode setting
(ref. Table3.2.7)
: Initial Setting
Table3.2.7 Selection of SH7149 operating modes
SH7149 Operating mode
SW4-1
(FWE)
SW4-2
(MD1)
SW4-3
(MD0)
Operating mode Mode name
ON ON ON Mode0
MCU extension mode0
(On-chip ROM not active, CSO space: 8-bit bus width)
ON ON OFF Mode1
MCU extension mode1
(On-chip ROM not active, CSO space: 8-bit bus width))
ON OFF ON Mode2 MCU extension mode2 (On-chip ROM active)
ON OFF OFF Mode3 Single chip mode (On-chip ROM active)
OFF ON ON Mode4 Boot mode (On-chip ROM active)
OFF ON OFF Mode5 User Boot mode (On-chip ROM active)
OFF OFF ON Mode6 User Programming mode (On-chip ROM active)
OFF OFF OFF Mode7 User Programming mode (On-chip ROM active)
: Initial Setting
Table3.2.8 lists functions of LEDs mounted in M3A-HS49.
Table3.2.8 Functions of LEDs Mounted in M3A-HS49
No. Color
Functions/Remarks
LED1 Blue Power-on LED (LED1 lights when power is supplied)
LED2 Green Open to the user (LED2 lights when PE0 outputs “L”)
LED3 Green Open to the user (LED3 lights when PE9 outputs “L”)
LED4 Green Open to the user (LED4 lights when PE11 outputs “L”)
LED5 Green Open to the user (LED5 lights when PE12 outputs “L”)
LED6 Green Open to the user (LED6 lights when PE14 outputs “L”)
LED7 Green Open to the user (LED7 lights when PE15 outputs “L”)
Red Interrupt confirmation (LED8 lights red when pushing at NMI switch (SW5).
LED8
Yellowgreen Interrupt confirmation (LED8 lights yellowgreen when pushing IRQ0 switch (SW6).