参数资料
型号: ST92E141K4D1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 16-BIT, UVPROM, 25 MHz, MICROCONTROLLER, CDIP32
封装: WINDOWED, SHRINK, CERAMIC, DIP-32
文件页数: 74/178页
文件大小: 1097K
代理商: ST92E141K4D1
165/178
ST92141 - ELECTRICAL CHARACTERISTICS
STANDARD TIMER TIMING TABLE
(VDD =5V ± 10%, TA = 40°Cto +85°C, CLoad = 50pF, fINTCLK = 25MHz, Push-pull output configuration,
unless otherwise specified)
Note: The value in the left hand column shows the formula used to calculate the timing minimum or maximum from the oscillator clock period,
standard timer prescaler and counter programmed values.
The value in the right hand two columns show the timing minimum and maximum for an internal clock (INTCLK) at 25MHz, with minimum and
maximum prescaler value and minimum and maximum counter value.
Measurement points are taken with reference to VIH-VIH /VOH-VOH for positive pulse and VIL-VIL /VOL-VOL for negative pulse
(1) Formula guaranteed by design.
Legend:
Tck = INTCLK period = OSCIN period when OSCIN is not divided by 2;
2 x OSCIN period when OSCIN is divided by 2;
OSCIN period x PLL factor when the PLL is enabled.
Psc = Standard Timer Prescaler Register content (STP): from 0 to 255
Cnt = Standard Timer Counter Registers content (STH,STL): from 0 to 65535
TSTIN = Standard Timer Input signal period (STIN ).
STANDARD TIMER TIMING
N
°
Symbol
Parameter
Value (Note)
Unit
Formula(1)
Min
Max
1
TwSTOL
STOUT Low Pulse Width
4 x (Psc+1) x (Cnt+1) x Tck
160
2.69
ns
s
(Psc+1) x (Cnt+1) x TSTIN
with TSTIN ≥ 8x Tck
320
ns
2
TwSTOH
STOUT High Pulse Width
4 x (Psc+1) x (Cnt+1) x Tck
160
2.69
ns
s
(Psc+1) x (Cnt+1) x TSTIN
with TSTIN ≥ 8x Tck
320
ns
3
TwSTIL
STIN High Pulse Width
≥ 4 x Tck + 10
170
ns
4
TwSTIH
STIN Low Pulse Width
≥ 4 x Tck + 10
170
ns
1
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