PSD4256G6V 查看數據表（PDF） - STMicroelectronics
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PSD4256G6V Datasheet PDF : 100 Pages
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PSD4256G6V
PSD REGISTER DESCRIPTION AND ADDRESS OFFSETS
Table 6 shows the offset addresses to the PSD
registers relative to the CSIOP base address. The
CSIOP space is the 256 bytes of address that is al-
located by the user to the internal PSD registers.
Table 6 provides brief descriptions of the registers
in CSIOP space. The following sections give a
more detailed description.
Table 6. Register Address Offset
Register Name
Port
A
Port
B
Port
C
Port
D
Port
E
Port
F
Port
G
Other(1)
Description
Data In
00 01 10 11 30 40 41
Reads Port pin as input, MCU I/O input mode
Control
32 42 43
Selects mode between MCU I/O or Address
Out
Data Out
04 05 14 15 34 44 45
Stores data for output to Port pins, MCU I/O
output mode
Direction
06 07 16 17 36 46 47
Configures Port pin as input or output
Drive Select
08 09
19 38
49
Configures Port pins as either CMOS or
Open Drain
Input Macrocell 0A 0B
1A
Reads Input Macrocells
Enable Out
0C 0D 1C
4C
Reads the status of the output enable to the I/
O Port driver
Output
Macrocells A
20
READ – reads output of Macrocells A
WRITE – loads Macrocell Flip-flops
Output
Macrocells B
21
READ – reads output of Macrocells B
WRITE – loads Macrocell Flip-flops
Mask
Macrocells A
22
Blocks writing to the Output Macrocells A
Mask
Macrocells B
23
Blocks writing to the Output Macrocells B
Flash Memory
Protection 1
C0 Read only – Primary Flash Sector Protection
Flash Memory
Protection 2
C1 Read only – Primary Flash Sector Protection
Flash Boot
Protection
C2
Read only – PSD Security and Secondary
Flash memory Sector Protection
JTAG Enable
C7 Enables JTAG Port
PMMR0
B0 Power Management Register 0
PMMR2
B4 Power Management Register 2
Page
E0 Page Register
VM
E2
Places PSD memory areas in Program and/
or Data space on an individual basis.
Memory_ID0
F0 Read only – SRAM and Primary memory size
Memory_ID1
F1
Read only – Secondary memory type and
size
Note: 1. Other registers that are not part of the I/O ports.
19/100
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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