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参数资料
| 型号： | uPSD3212 |
| 厂商： | 意法半导体 |
| 英文描述： | Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可编程系统器件) |
| 中文描述： | 闪存可编程系统器件与8032微控制器内核（嵌入高速“8032微控制器核”的闪存型可编程系统器件） |
| 文件页数： | 52/155页 |
| 文件大小： | 1055K |
| 代理商： | UPSD3212 |
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μPSD321X
52/155
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 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 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 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
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 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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相关代理商/技术参数 |
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|---|---|
| UPSD3212A | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212A-24T6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212A-24U6T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic |
| UPSD3212A-40T6 | 功能描述:8位微控制器 -MCU Flash Programmable System Devices RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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