参数资料
型号: C8051F018R
厂商: Silicon Laboratories Inc
文件页数: 102/154页
文件大小: 0K
描述: IC 8051 MCU 16K FLASH 64TQFP
标准包装: 1
系列: C8051F018
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SMBus(2 线/I²C),SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,温度传感器,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: 闪存
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 2.8 V ~ 3.6 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 64-TQFP
包装: 剪切带 (CT)
其它名称: 336-1048-1
C8051F018
C8051F019
Figure 8.2. Memory Map
FLASH
(In-System
Programmable in 512
Byte Sectors)
PROGRAM MEMORY
0x0000
0x7FFF
(Direct and Indirect
Addressing)
0x00
0x7F
Upper 128 RAM
(Indirect Addressing
Only)
0x80
0xFF
Special Function
Register's
(Direct Addressing Only)
RESERVED
0x3E00
0x3DFF
DATA MEMORY
General Purpose
Registers
0x1F
0x20
0x2F
Bit Addressable
Lower 128 RAM
(Direct and Indirect
Addressing)
0x30
INTERNAL DATA ADDRESS SPACE
EXTERNAL DATA ADDRESS SPACE
RAM - 1024 Bytes
(accessable using MOVX
command)
0x0000
0x03FF
(same 1024 byte RAM block )
0x0400
0x07FF
(same 1024 byte RAM block )
0xFC00
0xFFFF
The same 1024 byte RAM
block can be addressed on
1k boundaries throughout
the 64k External Data
Memory space.
(same 1024 byte RAM block )
0x0800
0x0BFF
FLASH
(In-System
Programmable)
0x8000
0x807F
8.2.5.
Stack
A programmer’s stack can be located anywhere in the 256-byte data memory. The stack area is designated using
the Stack Pointer (SP, 0x81) SFR. The SP will point to the last location used. The next value pushed on the stack is
placed at SP+1 and then SP is incremented. A reset initializes the stack pointer to location 0x07. Therefore, the
first value pushed on the stack is placed at location 0x08, which is also the first register (R0) of register bank 1.
Thus, if more than one register bank is to be used, the SP should be initialized to a location in the data memory not
being used for data storage. The stack depth can extend up to 256 bytes.
The MCUs also have built-in hardware for a stack record. The stack record is a 32-bit shift register, where each
Push or increment SP pushes one record bit onto the register, and each Call or interrupt pushes two record bits onto
the register. (A Pop or decrement SP pops one record bit, and a Return pops two record bits, also.) The stack
record circuitry can also detect an overflow or underflow on the Stack, and can notify the debug software even with
the MCU running full-speed debug.
51
Rev. 1.2
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