HD6413308 Hitachi Semiconductor, HD6413308 Datasheet - Page 122

no-image

HD6413308

Manufacturer Part Number
HD6413308
Description
Hitachi Single-Chip MicroComputer
Manufacturer
Hitachi Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD6413308CP10
Manufacturer:
RENESAS
Quantity:
776
Part Number:
HD6413308CP10
Manufacturer:
HITACAI
Quantity:
20 000
Part Number:
HD6413308CP10V
Manufacturer:
RENESAS
Quantity:
776
Part Number:
HD6413308RCP10
Manufacturer:
HITACHI/日立
Quantity:
20 000
Part Number:
HD6413308RF8
Manufacturer:
NEC
Quantity:
2 468
Part Number:
HD6413308RF8
Manufacturer:
HITACHI/日立
Quantity:
20 000
Pin P8
: This pin has the same functions in all modes. It can be used for general-purpose input or
6
output, for serial clock input or output (CSCK), or for IRQ
input. When this pin is used for IRQ
5
5
input, P8
DDR should normally be cleared to "0," so that the value in P8DR will not generate
6
interrupts.
When used for CSCK input or output, this pin is unaffected by the values in P8DDR and P8DR,
except that software can turn on its MOS pull-up by clearing its data direction bit to "0" and setting
its data bit to "1." For CSCK usage, the MOS pull-up should be turned off.
Reset: A reset clears bits P8
DDR to P8
DDR to “0” and clears the DPME bit, serial control bits,
6
1
and interrupt enable bits to “0,” making P8
to P8
into input port pins with the MOS pull-ups off.
6
1
In the expanded modes (modes 1 and 2), P8
DDR is initialized to “1” and the P8
pin is used for E
0
0
clock output. In the single-chip mode (mode 3), P8
DDR is initialized to “0” and the P8
pin is
0
0
used for port input.
Hardware Standby Mode: All pins are placed in the high-impedance state with the MOS pull-ups
off.
Software Standby Mode: In the software standby mode, the serial control register is initialized,
but the DPME bit, the interrupt enable register, P8DDR, and P8DR remain in their previous states.
Pins that were being used for serial communication revert to general-purpose input or output,
depending on the value in P8DDR. Other pins remain in their previous state. Output pins output
the values in P8DR. E clock output is Low.
Figures 5-14 to 5-19 show schematic diagrams of port 8.
107

Related parts for HD6413308