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| 型號(hào)： | TS80C51RA2-LIBD |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | High Performance 8-bit Microcontrollers |
| 中文描述： | 8-BIT, 30 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 24/74頁(yè) |
| 文件大?。?/td> | 903K |
| 代理商： | TS80C51RA2-LIBD |
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24
Rev. C - 06 March, 2001
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
Figure 7. PCA Timer/Counter
Table 8. CMOD: PCA Counter Mode Register
The CMOD SFR
includes three additional bits associated with the PCA (
See Figure 7 and Table 8).
The CIDL bit which allows the PCA to stop during idle mode.
The WDTE bit which enables or disables the watchdog function on module 4.
CMOD
Address 0D9H
CIDL
WDTE
-
-
-
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.
a
-
a.
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.
CPS1
CPS0
Selected PCA input
.
b
b.
0
0
Internal clock f
osc
/12 ( Or f
osc
/6 in X2 Mode).
Internal clock f
osc
/4 ( Or f
osc
/2 in X2 Mode).
Timer 0 Overflow
0
1
1
0
1
1
External clock at ECI/P1.2 pin (max rate = f
osc
/ 8)
PCA Enable Counter Overflow interrupt: ECF = 1 enables CF bit in CCON to generate an
interrupt. ECF = 0 disables that function of CF.
ECF
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TS80C51RA2-LIBR | High Performance 8-bit Microcontrollers |
| TS80C51RA2-LCNB | High Performance 8-bit Microcontrollers |
| TS80C51RA2-LCND | High Performance 8-bit Microcontrollers |
| TS80C51RA2-LCNR | High Performance 8-bit Microcontrollers |
| TS80C51RA2-LCEB | High Performance 8-bit Microcontrollers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS80C51RA2-LIBR | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-LIE | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontroller |
| TS80C51RA2-LIEB | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-LIED | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-LIER | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
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