參數(shù)資料
型號： uPSD3234B-40T6T
廠商： 意法半導體
英文描述： Flash Programmable System Devices with 8032 Microcontroller Core
中文描述： 閃存可編程系統(tǒng)設備與8032微控制器內核
文件頁數(shù)： 50/170頁
文件大小： 2717K
代理商： UPSD3234B-40T6T
uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
50/170
Mode 0.
Putting either Timer into Mode 0 makes
it look like an 8048 Timer, which is an 8-bit Counter
with a divide-by-32 prescaler.
Figure 22., page 51
shows the 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 either GATE = 0 or /INT1 = 1. (Setting GATE
= 1 allows the Timer to be controlled by external 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
22., page 51
. 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.
signals
in
Figure
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
Timer 1
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 or Counter 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
Timer 0
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 or Counter 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 0 control
bits. TH0 is an 8-bit timer only controlled by Timer 1 control bits
0
M0
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uPSD3234B-40U1T Flash Programmable System Devices with 8032 Microcontroller Core
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相關代理商/技術參數(shù)
參數(shù)描述
UPSD3234B-40U1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3234B-40U1T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
UPSD3234B-40U6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3234B-40U6T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
UPSD3234BV 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core
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