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AT87F55-33AC PDF预览

AT87F55-33AC

更新时间: 2024-11-25 03:12:23
品牌 Logo 应用领域
美国微芯 - MICROCHIP 控制器微控制器微控制器和处理器
页数 文件大小 规格书
27页 377K
描述
Microcontroller, 8-Bit, FLASH, 33MHz, CMOS, PQFP44

AT87F55-33AC 数据手册

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Features  
Compatible with MCS-51Products  
20K Bytes of One-time Programmable QuickFlashMemory  
4V to 6V Operating Range  
Fully Static Operation: 0 Hz to 33 MHz  
Three-level Program Memory Lock  
256 x 8-bit Internal RAM  
32 Programmable I/O Lines  
Three 16-bit Timer/Counters  
Eight Interrupt Sources  
Programmable Serial Channel  
Low-power Idle and Power Down Modes  
Interrupt Recovery from Power Down  
Hardware Watchdog Timer  
8-bit  
Microcontroller  
with 20K Bytes  
QuickFlash™  
Dual Data Pointer  
Power-off Flag  
Description  
The AT87F55 is a low-power, high-performance CMOS 8-bit microcomputer with 20K  
bytes of QuickFlash one-time programmable (OTP) read only memory and 256 bytes  
of RAM. The device is manufactured using Atmels high-density nonvolatile memory  
technology and is compatible with the industry standard 80C51 and 80C52 instruction  
set and pinout. The on-chip QuickFlash allows the program memory to be user pro-  
(continued)  
AT87F55  
Preliminary  
Pin Configurations  
PDIP  
(T2) P1.0  
(T2EX) P1.1  
P1.2  
1
2
3
4
5
6
7
8
9
40 VCC  
39 P0.0 (AD0)  
38 P0.1 (AD1)  
37 P0.2 (AD2)  
36 P0.3 (AD3)  
35 P0.4 (AD4)  
34 P0.5 (AD5)  
33 P0.6 (AD6)  
32 P0.7 (AD7)  
31 EA/VPP  
P1.3  
P1.4  
P1.5  
TQFP  
P1.6  
P1.7  
RST  
(RXD) P3.0 10  
(TXD) P3.1 11  
(INT0) P3.2 12  
(INT1) P3.3 13  
(T0) P3.4 14  
(T1) P3.5 15  
(WR) P3.6 16  
(RD) P3.7 17  
XTAL2 18  
30 ALE/PROG  
29 PSEN  
28 P2.7 (A15)  
27 P2.6 (A14)  
26 P2.5 (A13)  
25 P2.4 (A12)  
24 P2.3 (A11)  
23 P2.2 (A10)  
22 P2.1 (A9)  
21 P2.0 (A8)  
P1.5  
P1.6  
1
2
3
4
5
6
7
8
9
33 P0.4 (AD4)  
32 P0.5 (AD5)  
31 P0.6 (AD6)  
30 P0.7 (AD7)  
29 EA/VPP  
P1.7  
RST  
(RXD) P3.0  
NC  
XTAL1 19  
28 NC  
GND 20  
(TXD) P3.1  
(INT0) P3.2  
(INT1) P3.3  
27 ALE/PROG  
26 PSEN  
25 P2.7 (A15)  
24 P2.6 (A14)  
23 P2.5 (A13)  
PLCC  
(T0) P3.4 10  
(T1) P3.5 11  
P1.5  
P1.6  
P1.7  
7
8
9
39 P0.4 (AD4)  
38 P0.5 (AD5)  
37 P0.6 (AD6)  
36 P0.7 (AD7)  
35 EA/VPP  
34 NC  
RST 10  
(RXD) P3.0 11  
NC 12  
(TXD) P3.1 13  
(INT0) P3.2 14  
(INT1) P3.3 15  
(T0) P3.4 16  
(T1) P3.5 17  
33 ALE/PROG  
32 PSEN  
31 P2.7 (A15)  
30 P2.6 (A14)  
29 P2.5 (A13)  
Rev. 1147B02/00  

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