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参数资料
| 型号： | P83C554SBBD |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| 中文描述： | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, SOT-314-2, LQFP-64 |
| 文件页数： | 12/76页 |
| 文件大小： | 400K |
| 代理商： | P83C554SBBD |
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Philips Semiconductors
Preliminary specification
80C554/83C554/87C554
80C51 8-bit microcontroller – 6 clock operation
16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O, 64L LQFP
2000 Nov 10
12
ERAM
256 BYTES
UPPER
128 BYTES
INTERNAL RAM
LOWER
128 BYTES
INTERNAL RAM
SPECIAL
FUNCTION
REGISTER
FF
00
FF
00
FF
00
80
80
EXTERNAL
DATA
MEMORY
FFFF
0000
0100
SU00980
Figure 5. Internal and External Data Memory Address Space with EXTRAM = 0
Dual DPTR
The dual DPTR structure (see Figure 6) is a way by which the chip
will specify the address of an external data memory location. There
are two 16-bit DPTR registers that address the external memory,
and a single bit called DPS = AUXR1/bit0 that allows the program
code to switch between them.
The DPS bit status should be saved by software when switching
between DPTR0 and DPTR1.
DPS
DPTR1
DPTR0
DPH
(83H)
DPL
(82H)
EXTERNAL
DATA
MEMORY
SU00745A
BIT0
AUXR1
Figure 6.
Note that bit 2 is not writable and is always read as a zero. This
allows the DPS bit to be quickly toggled simply by executing an
INC AUXR1 instruction without affecting the other bits.
DPTR Instructions
The instructions that refer to DPTR refer to the data pointer that is
currently selected using the AUXR1/bit 0 register. The six
instructions that use the DPTR are as follows:
INC DPTR
Increments the data pointer by 1
MOV DPTR, #data16
Loads the DPTR with a 16-bit constant
MOV A, @ A+DPTR
Move code byte relative to DPTR to ACC
MOVX A, @ DPTR
Move external RAM (16-bit address) to
ACC
MOVX @ DPTR , A
Move ACC to external RAM (16-bit
address)
JMP @ A + DPTR
Jump indirect relative to DPTR
The data pointer can be accessed on a byte-by-byte basis by
specifying the low or high byte in an instruction which accesses the
SFRs. See application note AN458 for more details.
相关PDF资料 |
PDF描述 |
|---|---|
| P80C554SBBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P87C554SFBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P83C554SFBD | 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P87C554 | 80C51 8-bit microcontroller(80C51 8位微控制器) |
| P87C654X2 | Octal Edge-Triggered D-Type Flip-Flops with 3-State Outputs 20-CDIP -55 to 125 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P83C554SFBD | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP |
| P83C557E4 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Single-chip 8-bit microcontroller |
| P83C557E4EBB | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Single-chip 8-bit microcontroller |
| P83C557E4EBB/YYY | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| P83C557E4EFB | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Single-chip 8-bit microcontroller |
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