參數(shù)資料
型號： P80C32X2FN,112
廠商： NXP Semiconductors
文件頁數(shù)： 10/62頁
文件大小： 0K
描述： IC 80C51 MCU 256 ROMLESS 40DIP
產(chǎn)品培訓模塊： Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標準包裝： 9
系列： 80C
核心處理器： 8051
芯體尺寸： 8-位
速度： 33MHz
連通性： EBI/EMI，UART/USART
外圍設備： POR
輸入/輸出數(shù)： 32
程序存儲器類型： ROMless
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
振蕩器型： 內部
工作溫度： -40°C ~ 85°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
其它名稱： 568-7900-5
568-7900-5-ND
568-8351-5
935269611112
P80C32X2FN
P80C32X2FN,112-ND
P80C32X2FN-ND
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
18
Table 4. Timer 2 Operating Modes
RCLK + TCLK
CP/RL2
TR2
MODE
0
1
16-bit Auto-reload
0
1
16-bit Capture
1
X
1
Baud rate generator
X
0
(off)
Symbol
Position
Name and Significance
TF2
T2CON.7
Timer 2 overflow flag set by a Timer 2 overflow and must be cleared by software. TF2 will not be set
when either RCLK or TCLK = 1.
EXF2
T2CON.6
Timer 2 external flag set when either a capture or reload is caused by a negative transition on T2EX and
EXEN2 = 1. When Timer 2 interrupt is enabled, EXF2 = 1 will cause the CPU to vector to the Timer 2
interrupt routine. EXF2 must be cleared by software. EXF2 does not cause an interrupt in up/down
counter mode (DCEN = 1).
RCLK
T2CON.5
Receive clock flag. When set, causes the serial port to use Timer 2 overflow pulses for its receive clock
in modes 1 and 3. RCLK = 0 causes Timer 1 overflow to be used for the receive clock.
TCLK
T2CON.4
Transmit clock flag. When set, causes the serial port to use Timer 2 overflow pulses for its transmit clock
in modes 1 and 3. TCLK = 0 causes Timer 1 overflows to be used for the transmit clock.
EXEN2
T2CON.3
Timer 2 external enable flag. When set, allows a capture or reload to occur as a result of a negative
transition on T2EX if Timer 2 is not being used to clock the serial port. EXEN2 = 0 causes Timer 2 to
ignore events at T2EX.
TR2
T2CON.2
Start/stop control for Timer 2. A logic 1 starts the timer.
C/T2
T2CON.1
Timer or counter select. (Timer 2)
0 = Internal timer (OSC/12 in 12-clock mode or OSC/6 in 6-clock mode)
1 = External event counter (falling edge triggered).
CP/RL2
T2CON.0
Capture/Reload flag. When set, captures will occur on negative transitions at T2EX if EXEN2 = 1. When
cleared, auto-reloads will occur either with Timer 2 overflows or negative transitions at T2EX when
EXEN2 = 1. When either RCLK = 1 or TCLK = 1, this bit is ignored and the timer is forced to auto-reload
on Timer 2 overflow.
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2
CP/RL2
SU01621
Bit Addressable
T2CON
Address = C8H
Reset Value = 00H
76
54
3
2
1
0
Figure 6. Timer/Counter 2 (T2CON) Control Register
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