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參數(shù)資料
| 型號(hào)： | P89C738ABA |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-bit Flash microcontrollers |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 16/64頁(yè) |
| 文件大?。?/td> | 360K |
| 代理商： | P89C738ABA |
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1998 Apr 07
16
Philips Semiconductors
Product specification
8-bit Flash microcontrollers
P89C738; P89C739
Fig.9 Internal and external data memory address space.
handbook, full pagewidth
MBK524
INDIRECT ONLY
DIRECT AND
INDIRECT
AUXILIARY
RAM
SFRs
255
127
0
EXTERNAL
(EA = 0)
INTERNAL
(EA = 1)
MAIN RAM
INTERNAL DATA MEMORY
EXTERNAL
DATA MEMORY
PROGRAM MEMORY
64 kbytes
64 kbytes
0
OVERLAPPED SPACE
256
8.3
Addressing
The P89C738 has five modes for addressing:
Register
Direct
Register-Indirect
Immediate
Base-Register plus Index-Register-Indirect.
The first three methods can be used for addressing
destination operands. Most instructions have a
‘destination/source’ field that specifies the data type,
addressing methods and operands involved.
For operations other than MOVs, the destination operand
is also a source operand.
Access to memory addresses is as follows:
Register in one of the four 8-bit register banks through
Register, Direct or Register-Indirect addressing
512 bytes of internal RAM through Direct or
Register-Indirect addressing. Bytes 0 to 127 of internal
RAM may be addressed directly/indirectly. Bytes
128 to 255 of internal RAM share their address location
with the SFRs and so may only be addressed indirectly
as data RAM. Bytes 0 to 255 of AUX-RAM can only be
addressed indirectly via MOVX.
SFR through Direct addressing at address locations
128 to 255
External data memory through Register-Indirect
addressing
Program memory look-up tables through Base-Register
plus Index-Register-Indirect addressing.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P89C738ABB | 8-bit Flash microcontrollers |
| P89C738ABP | 8-bit Flash microcontrollers |
| P89C739 | 8-bit Flash microcontrollers |
| P89LPC904 | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
| P89LPC904FD | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89C738ABB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit Flash microcontrollers |
| P89C738ABP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit Flash microcontrollers |
| P89C738BBB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P89C739 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit Flash microcontrollers |
| P89C739ABA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit Flash microcontrollers |
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