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參數(shù)資料
| 型號(hào)： | T89C51RD2-RLRIM |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | 1.40 MM, VQFP-44 |
| 文件頁(yè)數(shù)： | 24/104頁(yè) |
| 文件大小： | 798K |
| 代理商： | T89C51RD2-RLRIM |
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24
T89C51RD2
4243G
–
8051
–
05/03
Figure 7.
PCA Timer/Counter
Table 10.
CMOD: PCA Counter Mode Register
CIDL
CPS1
CPS0
ECF
It
CH
CL
16 bit up/down counter
To PCA
modules
Fosc /12
Fosc / 4
T0 OVF
P1.2
Idle
CMOD
0xD9
WDTE
CF
CR
CCON
0xD8
CCF4 CCF3
CCF2
CCF1
CCF0
overflow
CMOD
Address 0D9H
CIDL
WDT
E
-
-
-
CPS1
CPS0
ECF
Reset value
0
0
X
X
X
0
0
0
Symbol
Function
CIDL
Counter Idle control: CIDL = 0 programs the PCA Counter to continue functioning during
idle Mode. CIDL = 1 programs it to be gated off during idle.
WDTE
Watchdog Timer Enable: WDTE = 0 disables Watchdog Timer function on PCA Module 4.
WDTE = 1 enables it.
-
Not implemented, reserved for future use.
(1)
1.
User software should not write 1s to reserved bits. These bits may be used in future 8051
family products to invoke new features. In that case, the reset or inactive value of the
new bit will be 0, and its active value will be 1. The value read from a reserved bit is
indeterminate.
f
osc
= oscillator frequency
CPS1
PCA Count Pulse Select bit 1.
CPS0
PCA Count Pulse Select bit 0.
CPS
1
CPS
0
Selected PCA input.
(2)
2.
0
0
Internal clock f
osc
/12 ( Or f
osc
/6 in X2 Mode).
0
1
Internal clock f
osc
/4 ( Or f
osc
/2 in X2 Mode).
1
0
Timer 0 Overflow
1
1
External clock at ECI/P1.2 pin (max rate = f
osc
/ 8)
ECF
PCA Enable Counter Overflow interrupt: ECF = 1 enables CF bit in CCON to generate an
interrupt. ECF = 0 disables that function of CF.
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| T89C51RD2-RLTIL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLTIM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T89C51RD2-RLRI-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLSC-L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLSC-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLSI-L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLSI-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
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