參數(shù)資料
型號： 87C52
廠商： NXP Semiconductors N.V.
英文描述： 80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz
中文描述： 80C51的8位單片機(jī)系列8K.64K/256.1K檢察官辦公室/光盤/無ROM，2.7V.5.5V低電壓，低功耗，高速33兆赫
文件頁數(shù)： 19/62頁
文件大?。?/td> 403K
代理商： 87C52
Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2003 Jan 24
19
TR2
Control
TL2
(8 bits)
TH2
(8 bits)
TF2
RCAP2L
RCAP2H
EXEN2
Control
EXF2
Timer 2
Interrupt
T2EX Pin
Transition
Detector
Capture
SU01622
C/T2 = 0
C/T2 = 1
*n = 6 in 6-clock mode; n = 12 in 12-clock mode.
OSC
÷
n*
T2 Pin
Figure 7. Timer 2 in Capture Mode
Not Bit Addressable
Symbol
Position
Function
—
Not implemented, reserved for future use.*
T2OE
T2MOD.1
Timer 2 Output Enable bit.
DCEN
T2MOD.0
Down Count Enable bit. When set, this allows Timer 2 to be configured as an up/down
counter.
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.
—
—
—
—
—
—
T2OE
DCEN
SU01519
7
6
5
4
3
2
1
0
*
T2MOD
Address = 0C9H
Reset Value = XXXX XX00B
Figure 8. Timer 2 Mode (T2MOD) Control Register
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