PSD4235G2V-12UI STMicroelectronics, PSD4235G2V-12UI Datasheet - Page 35
PSD4235G2V-12UI
Manufacturer Part Number
PSD4235G2V-12UI
Description
IC FLASH 4MBIT 120NS 80TQFP
Manufacturer
STMicroelectronics
Datasheet
1.PSD4235G2-70U.pdf
(129 pages)
Specifications of PSD4235G2V-12UI
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
4M (512K x 8)
Speed
120ns
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TQFP, 80-VQFP
Number Of Macrocells
24
Maximum Operating Frequency
25.6 MHz
Delay Time
90 ns
Operating Supply Voltage
3 V to 3.6 V
Maximum Operating Temperature
85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-1970
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PSD4235G2V-12UI
Manufacturer:
STMicroelectronics
Quantity:
10 000
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PSD4235G2
7
7.1
Detailed operation
As shown in
●
●
●
●
●
●
The functions of each block are described in the following sections. Many of the blocks
perform multiple functions, and are user configurable.
Memory blocks
The PSD has the following memory blocks:
●
●
●
The Memory Select signals for these blocks originate from the Decode PLD (DPLD) and are
user-defined in PSDsoft Express.
Table 28
Table 28.
number
Sector
Total
0
1
2
3
4
5
6
7
Memory blocks
PLD blocks
MCU bus Interface
I/O ports
Power management unit (PMU)
JTAG-ISP interface
Primary Flash memory
Secondary Flash memory
SRAM
summarizes the sizes and organisations of the memory blocks.
Sector size
512 Kbytes
Primary Flash Memory
Figure
Memory block size and organization
Kbytes)
(x16,
32
32
32
32
32
32
32
32
3, the PSD consists of six major types of functional blocks:
8 sectors
Sector
Select
signal
FS0
FS1
FS2
FS3
FS4
FS5
FS6
FS7
Secondary Flash Memory
Sector size
32 Kbytes
Kbytes)
(x16,
4
4
4
4
CSBOOT0
CSBOOT1
CSBOOT2
CSBOOT3
4 sectors
Sector
Select
signal
SRAM size
8 Kbytes
Kbytes)
(x16,
4
Detailed operation
SRAM
SRAM
Select
signal
RS0
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