参数资料
型号: AT89C51RC-24AU
厂商: Atmel
文件页数: 34/36页
文件大小: 0K
描述: MCU 8051 32K FLASH 5.5V 44-VQFP
产品培训模块: MCU Product Line Introduction
标准包装: 160
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 24MHz
连通性: SPI,UART/USART
外围设备: WDT
输入/输出数: 32
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-TQFP
包装: 托盘
配用: AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
7
1920D–MICRO–6/08
AT89C51RC
Note that not all of the addresses are occupied, and unoccupied addresses may not be imple-
mented on the chip. Read accesses to these addresses will in general return random data, and
write accesses will have an indeterminate effect.
User software should not write 1s to these unlisted locations, since they may be used in future
products to invoke new features. In that case, the reset or inactive values of the new bits will
always be 0.
Timer 2 Registers: Control and status bits are contained in registers T2CON (shown in Table 5-
2) and T2MOD (shown in Table 13-1 and Table 5-4) for Timer 2. The register pair (RCAP2H,
RCAP2L) are the Capture/Reload registers for Timer 2 in 16-bit capture mode or 16-bit auto-
reload mode.
Interrupt Registers: The individual interrupt enable bits are in the IE register. Two priorities can
be set for each of the six interrupt sources in the IP register.
Dual Data Pointer Registers: To facilitate accessing both internal and external data memory,
two banks of 16-bit Data Pointer Registers are provided: DP0 at SFR address locations 82H-
83H and DP1 at 84H-85H. Bit DPS = 0 in SFR AUXR1 selects DP0 and DPS = 1 selects DP1.
The user should always initialize the DPS bit to the appropriate value before accessing the
respective Data Pointer Register.
Power Off Flag: The Power Off Flag (POF) is located at bit 4 (PCON.4) in the PCON SFR. POF
is set to “1” during power up. It can be set and reset under software control and is not affected by
reset.
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