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UPSD3233 датащи(PDF) 126 Page - STMicroelectronics

номер детали UPSD3233
подробное описание детали  Flash Programmable System Devices with 8032 Microcontroller Core
PDF  170 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3233 датащи(HTML) 126 Page - STMicroelectronics

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Port D – Functionality and Structure
Port D has two I/O pins (only one pin, PD1, in the
52-pin package). See Figure 67 and Figure
68., page 127. This port does not support Address
Out Mode, and therefore no Control Register is re-
quired. Of the eight bits in the Port D registers,
only Bits 2 and 1 are used to configure pins PD2
and PD1.
Port D can be configured to perform one or more
of the following functions:
–
MCU I/O Mode
–
CPLD Output – External Chip Select (ECS1-
ECS2)
–
CPLD Input – direct input to the CPLD, no
Input Macrocells (IMC)
–
Slew rate – pins can be set up for fast slew
rate
Port D pins can be configured in PSDsoft Express
as input pins for other dedicated functions:
–
CLKIN (PD1) as input to the macrocells flip-
flops and APD counter
–
PSD Chip Select Input (CSI, PD2). Driving this
signal High disables the Flash memory, SRAM
and CSIOP.
Figure 67. Port D Structure
DATA OUT
REG.
DQ
DQ
WR
WR
ECS[ 2:1]
READ MUX
P
D
B
CPLD - INPUT
DIR REG.
DATA IN
ENABLE PRODUCT
TERM (.OE)
OUTPUT
SELECT
OUTPUT
MUX
PORT D PIN
DATA OUT
AI06606



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