參數(shù)資料
型號: 89C54
廠商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
中文描述: 80C51的8位單片機系列4K/8K/16K/32K閃光
文件頁數(shù): 10/32頁
文件大?。?/td> 212K
代理商: 89C54
Philips Semiconductors
Product specification
89C51/89C52/89C54/89C58
80C51 8-bit microcontroller family
4K/8K/16K/32K Flash
1999 Oct 27
10
Table 3.
Timer 2 Operating Modes
RCLK + TCLK
CP/RL2
TR2
MODE
0
0
1
16-bit Auto-reload
0
1
1
16-bit Capture
1
X
1
Baud rate generator
X
X
0
(off)
OSC
÷
12
C/T2 = 0
C/T2 = 1
TR2
Control
TL2
(8-bits)
TH2
(8-bits)
TF2
RCAP2L
RCAP2H
EXEN2
Control
EXF2
Timer 2
Interrupt
T2EX Pin
Transition
Detector
T2 Pin
Capture
SU00066
Figure 2. Timer 2 in Capture Mode
Not Bit Addressable
Symbol
Function
Not implemented, reserved for future use.*
T2OE
Timer 2 Output Enable bit.
DCEN
Down Count Enable bit. When set, this allows Timer 2 to be configured as an up/down counter.
T2OE
DCEN
SU00729
7
6
5
4
3
2
1
0
*
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.
Bit
T2MOD
Address = 0C9H
Reset Value = XXXX XX00B
Figure 3. Timer 2 Mode (T2MOD) Control Register
相關(guān)PDF資料
PDF描述
89C51 80C51 8-bit microcontroller family 4K Flash(80C51八位微控制器系列 4K 閃速存儲器)
89C52 80C51 8-bit microcontroller family8KFlash(80C51八位微控制器系列 8K閃速存儲器)
89C58 80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
89CNQ135
89CNQ150
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