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H8S2245 데이터시트(PDF) 249 Page - Renesas Technology Corp

부품명 H8S2245
상세설명  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S2245 데이터시트(HTML) 249 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev.3.00 Mar. 26, 2007 Page 207 of 772
REJ09B0355-0300
Section 8 I/O Ports
8.1
Overview
The H8S/2245 Group has 11 I/O ports (ports 1, 2, 3, 5, and A to G), and one input-only port (port
4).
Table 8.1 summarizes the port functions. The pins of each port also have other functions.
Each port includes a data direction register (DDR) that controls input/output (not provided for the
input-only port), a data register (DR) that stores output data, and a port register (PORT) used to
read the pin states.
Ports A to E have a built-in MOS input pull-up function, and in addition to DR and DDR, have a
MOS input pull-up control register (PCR) to control the on/off state of MOS input pull-up.
Ports 3 and A include an open-drain control register (ODR) that controls the on/off state of the
output buffer PMOS.
Ports 1 and A to F can drive a single TTL load and 90-pF capacitive load, and ports 2, 3, 5, and G
can drive a single TTL load and 30-pF capacitive load. All the I/O ports can drive a Darlington
transistor when in output mode. Ports 1, and A to C can drive an LED (10-mA sink current).
Port 2 and the interrupt input pins (
IRQ0 to IRQ7) are Schmitt-triggered inputs.



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