參數(shù)資料
型號(hào): AT89C55WD-24AU
廠(chǎng)商: Atmel
文件頁(yè)數(shù): 10/34頁(yè)
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 20K 44TQFP
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 160
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 24MHz
連通性: UART/USART
外圍設(shè)備: WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 20KB(20K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-TQFP
包裝: 托盤(pán)
PIC10F200/202/204/206
DS41239D-page 16
2007 Microchip Technology Inc.
4.2
Program Memory Organization for
the PIC10F202/206
The PIC10F202/206 devices have a 10-bit Program
Counter (PC) capable of addressing a 1024 x 12
program memory space.
Only the first 512 x 12 (0000h-01FFh) for the
PIC10F202/206 are physically implemented (see
Figure 4-2). Accessing a location above these
boundaries will cause a wraparound within the first
512 x 12 space (PIC10F202/206). The effective
Reset vector is at 0000h (see Figure 4-2). Location
01FFh (PIC10F202/206) contains the internal clock
oscillator calibration value. This value should never
be overwritten.
FIGURE 4-2:
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC10F202/206
4.3
Data Memory Organization
Data memory is composed of registers or bytes of
RAM. Therefore, data memory for a device is specified
by its register file. The register file is divided into two
functional groups: Special Function Registers (SFR)
and General Purpose Registers (GPR).
The Special Function Registers include the TMR0 reg-
ister, the Program Counter (PCL), the STATUS register,
the I/O register (GPIO) and the File Select Register
(FSR). In addition, Special Function Registers are used
to control the I/O port configuration and prescaler
options.
The General Purpose registers are used for data and
control information under command of the instructions.
For the PIC10F200/204, the register file is composed of
7 Special Function registers and 16 General Purpose
registers (see Figure 4-3 and Figure 4-4).
For the PIC10F202/206, the register file is composed of
8 Special Function registers and 24 General Purpose
registers (see Figure 4-4).
4.3.1
GENERAL PURPOSE REGISTER
FILE
The General Purpose Register file is accessed, either
directly or indirectly, through the File Select Register
CALL, RETLW
PC<8:0>
Stack Level 1
Stack Level 2
User
Mem
o
ry
Space
10
0000h
02FFh
Reset Vector(1)
Note 1:
Address 0000h becomes the
effective Reset vector. Location
01FFh contains the MOVLW XX
internal oscillator calibration value.
512 Words
01FFh
0200h
On-chip Program
Memory
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