Maxim specifications DS5001FP 128k Soft Microprocessor Chip, Features

DS5001FP 128k Soft Microprocessor Chip

www.maxim-ic.com

FEATURES

￿8051-compatible microprocessor adapts to its task

–Accesses up to 128kB of nonvolatile

SRAM

–In-system programming through on-chip serial port

–Can modify its own program or data memory

–Accesses memory on a separate byte-wide bus

–Performs CRC-16 check of NV RAM memory

–Decodes memory and peripheral chip enables

￿High-reliability operation

–Maintains all nonvolatile resources for over 10 years

–Power-fail reset

–Early warning power-fail interrupt

–Watchdog timer

–Lithium backs user SRAM for program/data storage

–Precision bandgap reference for power monitor

￿Fully 8051-compatible

–128kB scratchpad RAM

–Two timer/counters

–On-chip serial port

–32 parallel I/O port pins

￿Software security available with DS5002FP secure microprocessor

PIN ASSIGNMENT (Top View)

		BA11		P0.5/AD5		PE1 P0.6/AD6 BA10 P0.7/AD7					CE1 NC				CE1N BD7 ALE BD6					PSEN BD5			P2.7/A15		BD4
			80		79		78	77	76	75		74		73		72	71	70	69		68	67		66		65
P0.4AD4		1																							64		P2.6/A14
CE2		2																							63		CE3
PE2		3																							62		CE4
BA9		4																							61		BD3
P0.3/AD3		5																							60		P2.5/A13
BA8		6																							59		BD2
P0.2/AD2		7																							58		P2.4/A12
BA13		8																							57		BD1
P0.1/AD1		9							DS5001FP																56		P2.3/A11
P0.0/AD0	11																								54		VLI
R/W		10																							55		BD0
VCC0		12																							53		BA15
VCC		13																							52		GND
MSEL		14																							51		P2.2/A10
P1.0		15																							50		P2.1/A9
BA14		16																							49		P2.0/A8
P1.1		17																							48		XTAL1
BA12		18																							47		XTAL2
P1.2		19																							46		P3.7/		RD
BA7		20																							45		P3.6/WR
P1.3		21																							44		P3.5/TI
PE3		22																							43		PF
PE4		23																							42			VRST
BA6		24																							41		P3.4/T0
	25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
		P1.4		BA5 P1.5 BA4 P1.6 BA3 P1.7									PROG BA2 RST BA1 P3.0/RXD BA0 P3.1/TXD										P3.2/INT0		P3.3/INT1

80-Pin MQFP

44-Pin MQFP

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: http://www.maxim-ic.com/errata.

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