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參數(shù)資料
| 型號： | UPSD3214AV-24U1T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM |
| 中文描述： | 閃存可編程系統(tǒng)設(shè)備與8032微控制器核心和64Kbit SRAM的 |
| 文件頁數(shù)： | 54/176頁 |
| 文件大?。?/td> | 1081K |
| 代理商： | UPSD3214AV-24U1T |
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μ
PSD323X
54/176
Mode 0.
Putting either Timer into Mode 0 makes
it looklike an8048 Timer, which is an 8-bitCounter
with a divide-by-32 prescaler. Figure 22 showsthe
Mode 0 operation as it applies to Timer1.
In this mode, the Timer register is configured as a
13-bit register. As the count rolls over from all ’1s’
to all ’0s,’ it sets the Timer interrupt flag TF1. The
counted input is enabled to the Timer when TR1 =
1 and eitherGATE = 0 or /INT1 = 1. (Setting GATE
= 1allows the Timer to becontrolled byexternal in-
put /INT1,to facilitate pulse width measurements).
TR1 is a control bit in the Special Function Regis-
ter TCON (TCON Control Register). GATE is in
TMOD.
The 13-bit register consists of all 8 bits of TH1 and
the lower 5 bits of TL1. The upper 3 bits of TL1 are
indeterminate and should be ignored. Setting the
run flag does not clear the registers.
Mode 0 operation is the same for the Timer0 as for
Timer1. Substitute TR0, TF0, and /INT0 for the
corresponding Timer1 signals in Figure 22. There
are two different GATE Bits, one for Timer1 and
one for Timer0.
Mode 1.
Mode 1 is the same as Mode 0, except
that the Timer register is being run with all 16 bits.
Table 38. TMOD Register (TMOD)
Table 39. Description of the TMOD Bits
7
6
5
4
3
2
1
0
Gate
C/T
M1
M0
Gate
C/T
M1
M0
Bit
Symbol
Timer
Function
7
Gate
Timer1
Gating control when set. Timer/Counter 1 is enabled only while INT1 pin is High and
TR1 control pin is set. When cleared, Timer 1 is enabled whenever TR1 control bit is set
6
C/T
Timer orCounter selector,cleared for timer operation (input from internal system clock);
set for counter operation (input from T1 input pin)
5
M1
(M1,M0)=(0,0): 13-bit Timer/Counter, TH1, with TL1 as 5-bit prescaler
(M1,M0)=(0,1): 16-bit Timer/Counter. TH1 and TL1 are cascaded. There is no prescaler.
(M1,M0)=(1,0): 8-bit auto-reload Timer/Counter. TH1 holds a value which is to be
reloaded into TL1 each time it overflows
(M1,M0)=(1,1): Timer/Counter 1 stopped
4
M0
3
Gate
Timer0
Gating control when set. Timer/Counter 0 is enabled only while INT0 pin is High and
TR0 control pin is set. When cleared, Timer 0 is enabled whenever TR0 control bit is set
2
C/T
Timer orCounter selector,cleared for timer operation (input from internal system clock);
set for counter operation (input from T0 input pin)
1
M1
(M1,M0)=(0,0): 13-bit Timer/Counter, TH0, with TL0 as 5-bit prescaler
(M1,M0)=(0,1): 16-bit Timer/Counter. TH0 and TL0 are cascaded. There is no prescaler.
(M1,M0)=(1,0): 8-bit auto-reload Timer/Counter. TH0 holds a value which is to be
reloaded into TL0 each time it overflows
(M1,M0)=(1,1): TL0 is an 8-bit Timer/Counter controlled by the standard TImer 0control
bits. TH0 is an 8-bit timer only controlled by Timer 1 control bits
0
M0
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| UPSD3233BV-40U1T | Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPSD3214AV-24U6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
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| UPSD3214AV-40T1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3214AV-40T1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3214AV-40T6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
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