HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 418

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

• Bit 8 (PA4 mode (PA4MD)): PA4MD selects the function of the PA4/WRL (WR) pin.
Bit 8: PA4MD
0
1
• Bits 7 and 6 (PA3 mode (PA3MD1 and PA3MD0)): PA3MD1 and PA3MD0 select the
Bit 7: PA3MD1
0
1
• Bits 5 and 4 (PA2 mode (PA2MD1 and PA2MD0)): PA2MD1 and PA2MD0 select the
Bit 5: PA2MD1
0
1
• Bits 3 and 2 (PA1 mode (PA1MD1 and PA1MD0)): PA1MD1 and PA1MD0 select the
Bit 3: PA1MD1
0
1
HITACHI 406
function of the PA3/CS7/WAIT pin. This pin has a pull-up MOS that is used when it functions
as a WAIT pin to allow selection of pull up or no pull up (for the WAIT pin) using the wait
state control register of the bus state controller (BSC). There is no pull up when if functions as
PA3 or CS7.
function of the PA2/CS6/TIOCB0 pin.
function of the PA1/CS5/RAS pin.
Function
Input/output (PA4)
Lower write output (WRL) or write output (WR) (initial value)
Bit 6: PA3MD0
0
1
0
1
Bit 4: PA2MD0
0
1
0
1
Bit 2: PA1MD0
0
1
0
1
Function
Input/output (PA3)
Chip select output (CS7)
Wait state input (WAIT) (initial value)
Reserved
Function
Input/output (PA2)
Chip select output (CS6) (initial value)
ITU input capture/output compare (TIOCB0)
Reserved
Function
Input/output (PA1)
Chip select output (CS5) (initial value)
Row address strobe output (RAS)
Reserved