PSD4235G2V-10U STMICROELECTRONICS [STMicroelectronics], PSD4235G2V-10U Datasheet - Page 67
PSD4235G2V-10U
Manufacturer Part Number
PSD4235G2V-10U
Description
Flash In-System Programmable (ISP) Peripherals for 16-bit MCUs
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.PSD4235G2V-10U.pdf
(100 pages)
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Port D – Functionality and Structure
Port D has four I/O pins. See Figure 30. Port D can
be configured to perform one or more of the follow-
ing functions:
Figure 30. Port D Structure
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
MCU I/O mode
CPLD Input – direct input to the CPLD, no Input
Macrocells (IMC)
Port D pins can be configured in PSDsoft as in-
put pins for other dedicated functions:
WR
WR
DIR Register
READ MUX
DATA OUT
Register
D
D
P
D
B
Q
Q
DATA OUT
DATA IN
Address Strobe (ALE/AS, PD0)
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.
WRITE-Enable High-byte (WRH, PD3) input, or
as DBE input from a MC68HC912.
CPLD - INPUT
OUTPUT
OUTPUT
SELECT
MUX
PORT D PIN
PSD4256G6V
AI04937
67/100
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