N8052AH Intel Corporation, N8052AH Datasheet

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N8052AH

Manufacturer Part Number
N8052AH
Description
8-bit control-oriented microcontroller with 8Kx8 internal program ROM and 256x8 data RAM
Manufacturer
Intel Corporation
Datasheet

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N8052AH
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N8052AH
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mu @
The MCS@51 controllers are optimized for control applications. Byte-processing and numerical operations on
tions. Extensive on-chip support is provided for one-bit variables as a separate data type, allowing direct bit
small data structures are facilitated by a variety of fast addressing modes for accessing the internal RAM. The
instruction set provides a convenient menu of 8-bit arithmetic instructions, including multiply and divide instruc-
manipulation and testing in control and logic systems that require Boolean processing.
The 8751H is an EPROM version of the 8051AH. It has 4 Kbytes of electrically programmable ROM which can
be erased with ultraviolet light. His fully compatible with the 8051AH but incorporates one additional feature: a
Program Memory Security bit that can be used to protect the EPROM against unauthorized readout. The
8751 H-8 is identical to the 8751 H but only operates up to 8 MHz.
The 8051AHP is identical to the 8051AH with the exception of the Protection Feature. To incorporate this
to 4K.
The 8052AH is an enhanced version of the 8051AH. It is backwards compatible with the 8051AH and is
fabricated with HMOS II technology. The 8052AH enhancements are listed in the table below. Also refer to this
table for the ROM, ROMless and-EPROM versions of each product.
I
Protection Feature, program verification has been disabled and external memory accesses have been limited
High Performance HMOS Process
2-Level interrupt Priority Structure
32 1/0 Lines (Four 8-Bit Ports)
64K External Program Memory Space
Security Feature Protects EPROM Parts
Against Software Piracy
Internal Timers/Event Counters
Intel Corporationassumes no responsibility for the use of any circuit~ other than circuitryembodied in an Intel product.No other circuitpatent
licenses are implied.Informationcontained herein supersedes previouslypublishedspecificationson theaa davices from Intel.
O INTEL CORPORATION, 1994
8031AH
8051AH
6051AHP
8751 H
8751 H-8
6751 BH
8032AH
6052AH
8752BH
Device
8-BIT CONTROL-ORIENTED MICROCONTROLLERS
4K
4K
4K
4K
4K
8K
8K
none
none
Program
X
X
X
X
X
X
X
8 ROM
6 ROM
8 EPROM
8 EPROM
8 EPROM
8 ROM
8 EPROM
Intsrnal Memory
8031AH18051AH18051AHP
Commercial/Express
8032N+18052N-I
8751BW8752BI-I
8751W8751H-8
MCS@51
256
256
256
128
128
128
128
128
128
Data
October 1994
X
X
X
X
X
X
X
X
X
8 RAM
8 RAM
8 RAM
8 RAM
6 RAM
8 RAM
6 RAM
8 RAM
8 RAM
Boolean Processor
Bit-Addressable RAM
Programmable Full Duplex Serial
Channel
64K External Data Memory Space
Extended Temperature Range
(–40”C to +85”C)
111 Instructions (64 Single-Cycle)
Event Counters
2 x 18-Bit
2 x 16-Bit
2 x 16-Bit
2 x 16-Bit
2 x 16-Bit
2 x 16-Bit
3 x 16-Bit
3 x 16-Bit
3 x 16-Bit
Timera/
www.DataSheet4U.com
Order Numben 272318-002
Interrupts
5
5
5
5
5
5
6
6
6

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N8052AH Summary of contents

Page 1

... ROM X 8752BH 8K 8 EPROM X I Intel Corporationassumes no responsibility for the use of any circuit~ other than circuitryembodied in an Intel product.No other circuitpatent licenses are implied.Informationcontained herein supersedes previouslypublishedspecificationson theaa davices from Intel. O INTEL CORPORATION, 1994 MCS@51 Commercial/Express 8031AH18051AH18051AHP 8032N+18052N-I 8751W8751H-8 8751BW8752BI-I ...

Page 2

MCS” 51 CONTROLLER - JK2U Acc ~M ‘f2#fi+-oN,TMoD, <> ... ,, , 7’7 I ‘% PSEN TyG g~ ALE E RST-+ ‘* h ,,(-1 --% =2 ...

Page 3

PACKAGES Part Prefix 8051AH P 8031AH D 8052AH N 8032AH 6752BH* 8751H D 8751 H-8 8051AHP P D 8751 NOTE: *8752BH 36”/10” for D, and 38”/22” for N. is All thermal impedance data is approximate for static ...

Page 4

MCS” 51 CONTROLLER PIN DESCRIPTIONS Vcc: Supply voltage. Vss: Circuit ground. Port O:Port 8-bit open drain bidirectional 1/0 port output port each pin can sink 8 LS TTL inputs. Port Opins that have 1‘s written ...

Page 5

PSEN: Program Store Enable is the read strobe to external Program Memory. When the device is executing code from external Program Memory, PSEN is activated twice each ma- chine cycle, except that two PSEN activations are skipped during each ...

Page 6

MCS@51 CONTROLLER Prefix Package Type P Plastic D Cerdip N PLCC TD Cerdip TP Plastic PLCC TN LD Cerdip LP Plastic NOTE: Contactdistributoror localsalesofficeto matchEXPRESS prefixwith properdevice. DESIGN CONSIDERATIONS If an 8751 BH or 8752BH is replacing an 8751 H ...

Page 7

ABSOLUTE MAXIMUM RATINGS* Ambient Temperature Under Bias –40” 85°C Storage Temperature . Voltage on EA/Vpp Pin to Vss 8751 8751 ...

Page 8

MCS” 51 CONTROLLER DC CHARACTERISTICS (Over Operating Conditions) ~—.-...—.—. All oarameter values armlv to all devices unless otherwise indicated (Continued) r., .-. _r Symbol Parameter 11L2 Logical OInput Current (XTAL2) ILI Input Leakage Current (Porf O) 8751 H and 8751 ...

Page 9

EXPLANATION OF THE AC SYMBOLS Each timing symbol has 5 characters. The first char- acter is always a ‘T’ (stands for time). The other characters, depending on their positions, stand for the name of a signal or the logical status ...

Page 10

MCS@51 CONTROLLER EXTERNAL PROGRAM MEMORY CHARACTERISTICS ‘arame’er Symbol TLLWL ALE Low Low Address Low TAVWL TQVWX Data Valid to WR Transition 8751H All Others TQVWH Data Valid to WR High TWHQX Data ...

Page 11

EXTERNAL PROGRAM MEMORY READ CYCLE w--- TLHLL _ ALE -TAVLL+ PSEN / PORTO 1 x PORT 2 EXTERNAL DATA MEMORY READ CYCLE ALE Y +TLHLL+ PSEN — TLLWL m + TAVLL + _TLLAX AO-A7 FROM RI OR OPL PORTO . ...

Page 12

M=” 51 CONTROLLER SERIAL PORT TIMING—SHIFT Test Conditions: Over ODeratina Conditions: Load Capacitance = 80 rJF Parameter Symbol TXLXL Serial Port Clock Cycle Time TQVXH Output Data Setup to Clock Rising Edge TXHQX Output Data Hold after Clock Rising Edge ...

Page 13

EXTERNAL CLOCK DRIVE Symbol 1/TCLCL Oscillator Frequency (except 8751H-8) 8751H-8 TCHCX High Time Low Time TCLCX I TCLCH I Rise Time Fall Time TCHCL EXTERNAL CLOCK DRIVE WAVEFORM — TCHCX — t 2.5 AC TESTING INPUT, OUTPUT WAVEFORM 2.4 2.0 ...

Page 14

MCS@51 CONTROLLER EPROM CHARACTERISTICS Mode RST PSEN Program 1 1 Verify Security Set 1 NOTE: “1” = logichighfor that pin “O” = logiclowfor that pin “X” = “don’t care” PROGRAMMING THE 8751H To be programmed, the part must be running ...

Page 15

EPROM Security The security feature consists of a ‘locking” bit which when programmed denies electrical access by any external means to the on-chip Program Memory. The bit is programmed as shown in Figure 7. The setup and procedure are the ...

Page 16

MCS” 51 CONTROLLER GI-” ”nl r“”” ”mrnmrlmn. w I-8. ” ,Lrl.. PROGRAMMING P1.O-PI.7 P3,0-P3,3 $ PORTO DATAIN { , TOVGL — TAVGL kLE/PROG \ TSHGL — HIGH Fi.vPP TSHSN — P3.7 (ENABLE) 1 ‘ For programmingconditionssee Figure 5. ...

Page 17

Programming the 8751BH/8752BH To be programmed, the 875XBH must be running with MHz oscillator. (The reason the oscilla- tor needs to be running is that the internal bus is being used to transfer address and ...

Page 18

MCS@51 CONTROLLER QUICK-PULSE PROGRAMMING ALGORITHM The 875XBH can be programmed using the Quick- Pulse Programming Algorithm for microcontrollers. The features of the new programming method are a lower Vpp (12.75 volts as compared to 21 volts) and a shorter programming ...

Page 19

PROGRAM MEMORY LOCK The two-level Program Lock system consists of 2 Lock bits and a 32-byte Encryption Array which are used to protect the program memory against soft- ware piracy. ENCRYPTION ARRAY Within the EPROM array are 32 bytes of ...

Page 20

MCS” 51 CONTROLLER ERASURE CHARACTERISTICS Erasure of the EPROM begins to occur when the 8752BH is exposed to light with wavelengths shorter than approximately 4,000 Angstroms. Since sunlight and fluorescent lighting have wavelengths in this range, exposure to these light ...

Page 21

DATA SHEET REVISION HISTORY Datasheets are changed as new device information becomes available. Verify with your local Intel sales office that you have the latest version before finalizing a design or ordering devices. The following differences exist between this datasheet ...

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