DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 309
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DF2211NP24V
Manufacturer Part Number
DF2211NP24V
Description
H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
Manufacturer
Renesas Technology / Hitachi Semiconductor
Datasheet
1.DF2211NP24V.pdf
(756 pages)
- Current page: 309 of 756
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8.10
The port E is an 8-bit I/O port also functioning as data bus (D7 to D0) I/O pins. The port E has the
following registers.
• Port E data direction register (PEDDR)
• Port E data register (PEDR)
• Port E register (PORTE)
• Port E pull-up MOS control register (PEPCR)
8.10.1
PEDDR specifies input or output for the pins of the port E.
Since PEDDR is a write-only register, the bit manipulation instructions must not be used to write
PEDDR. For details, see section 2.9.4, Accessing Registers Containing Write-Only Bits.
Bit
7
6
5
4
3
2
1
0
Bit Name Initial Value
PE7DDR
PE6DDR
PE5DDR
PE4DDR
PE3DDR
PE2DDR
PE1DDR
PE0DDR
Port E
Port E Data Direction Register (PEDDR)
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
(H8S/2218 Group)
Modes 4 to 6:
When 8-bit bus mode is selected, port E functions as an
I/O port. Setting a PEDDR bit to 1 makes the
corresponding port E pin an output port, while clearing the
bit to 0 makes the pin an input port.
When 16-bit bus mode is selected, the input/output
direction settings in PEDDR are ignored, and port E pins
automatically function as data input/output pins.
For details on 8-bit/16-bit bus mode, refer to section 6,
Bus Controller.
Mode 7:
Setting a PEDDR bit to 1 makes the corresponding port E
pin an output port, while clearing the bit to 0 makes the
pin an input port.
(H8S/2212 Group)
Setting a PEDDR bit to 1 makes the corresponding port E
pin an output port, while clearing the bit to 0 makes the
pin an input port.
Description
Rev.7.00 Dec. 24, 2008 Page 255 of 698
REJ09B0074-0700
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