Section 8 I/O Ports
Rev.2.00 Jun. 28, 2007 Page 251 of 666
REJ09B0311-0200
Section 8 I/O Ports
Table 8.1 summarizes the port functions. The pins of each port also have other functions such as
input/output pins of on-chip peripheral modules or external interrupt input pins. Each I/O port
includes a data direction register (DDR) that controls input/output, a data register (DR) that stores
output data, a port register (PORT) used to read the pin states, and an input buffer control register
(ICR) that controls input buffer on/off. Port 5 does not have a DR or a DDR register.
Ports D to F, H, and I have internal input pull-up MOSs and a pull-up MOS control register (PCR)
that controls the on/off state of the input pull-up MOSs.
Ports 2 and F include an open-drain control register (ODR) that controls on/off of the output
buffer PMOSs.
All of the I/O ports can drive a single TTL load and capacitive loads up to 30 pF.
All of the I/O ports can drive Darlington transistors when functioning as output ports.
Ports 2 and 3 are Schmitt-trigger inputs. Schmitt-trigger inputs for other ports are enabled when
used as the
IRQ
, TPU, or TMR inputs.
Table 8.1
Port Functions
Function
Port Description
Bit I/O
Input
Output
Schmitt-
Trigger
Input
*
1
Input
Pull-up
MOS
Function
Open-
Drain
Output
Function
Port 1
7
P17
IRQ7
-A/
TCLKD-B
IRQ7
-A,
TCLKD-B
6
P16
IRQ6
-A/
TCLKC-B
IRQ6
-A,
TCLKC-B
General I/O port
also functioning
as interrupt inputs,
SCI I/Os, A/D
converter inputs,
and TPU inputs
5 P15
IRQ5
-A/
TCLKB-B
IRQ5
-A,
TCLKB-B
4
P14
IRQ4
-A/
TCLKA-B
IRQ4
-A,
TCLKA-B
3
P13
ADTRG0
/
IRQ3
-A
IRQ3
-A
2
P12/SCK2
IRQ2
-A
IRQ2
-A
1
P11 RxD2/
IRQ1
-A
IRQ1
-A
0
P10
IRQ0
-A TxD2
IRQ0
-A
Summary of Contents for H8SX/1650
Page 2: ...Rev 2 00 Jun 28 2007 Page ii of xxii...
Page 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Page 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Page 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Page 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Page 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Page 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Page 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Page 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Page 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Page 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
Page 688: ...Rev 2 00 Jun 28 2007 Page 666 of 666 REJ09B0311 0200...
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Page 692: ...H8SX 1650 Group Hardware Manual...