參數(shù)資料
型號: PSD4256G6V-10UIT
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 1M X 8 FLASH, 52 I/O, PIA-GENERAL PURPOSE, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 7/127頁
文件大?。?/td> 1091K
代理商: PSD4256G6V-10UIT
DC and AC parameters
PSD4256G6V
104/127
25
DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device:
DC electrical specification
AC timing specification
PLD timing
Combinatorial timing
Synchronous Clock mode
Asynchronous Clock mode
Input macrocell timing
MCU timing
READ timing
WRITE timing
Peripheral mode timing
Power-down and RESET timing
The parameters in the DC and AC Characteristic tables that follow are derived from tests
performed under the Measurement Conditions summarized in the relevant tables. Designers
should check that the operating conditions in their circuit match the measurement conditions
when relying on the quoted parameters.
The following are issues concerning the parameters presented:
In the DC specification the supply current is given for different modes of operation.
Before calculating the total power consumption, determine the percentage of time that
the PSD is in each mode. Also, the supply power is considerably different if the Turbo
bit is 0.
The AC power component gives the PLD, Flash memory, and SRAM mA/MHz
specification. Figure 39 shows the PLD mA/MHz as a function of the number of Product
Terms (PT) used.
In the PLD timing parameters, add the required delay when Turbo bit is 0.
Figure 39.
PLD ICC / frequency consumption
0
10
20
30
40
50
60
VCC = 3V
010
15
5
20
25
I CC
(mA)
TURBO
ON (100%)
TURBO
ON (25%)
TURBO
OFF
TURBO
OFF
HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz)
PT 100%
PT 25%
AI04942
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