参数资料
型号: P87C51RB2BN,112
厂商: NXP Semiconductors
文件页数: 9/67页
文件大小: 0K
描述: IC 80C51 MCU 16K OTP 40-DIP
产品培训模块: Migrating from 8/16-Bit MCUs to 32-Bit ARMs
标准包装: 9
系列: 87C
核心处理器: 8051
芯体尺寸: 8-位
速度: 33MHz
连通性: EBI/EMI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 16KB(16K x 8)
程序存储器类型: OTP
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 40-DIP(0.600",15.24mm)
包装: 管件
产品目录页面: 705 (CN2011-ZH PDF)
其它名称: 568-3200-5
935271895112
P87C51RB2BN
Philips Semiconductors
Product data
P87C51RA2/RB2/RC2/RD2
80C51 8-bit microcontroller family 8KB/16KB/32KB/64KB OTP
with 512B/1KB RAM, low voltage (2.7 to 5.5 V), low power, high
speed (30/33 MHz)
2003 Jan 24
17
Table 3.
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)
OSC
÷ n*
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
SU01252
* n = 6 in 6-clock mode, or 12 in 12-clock mode.
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
76
54
32
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
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