IBM EM78P447N manual Code Option Register Word

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EM78P447N

8-Bit Microcontroller with OTP ROM

Table 13 RC Oscillator Frequencies

Cext		Rext		Average Fosc 5V,25°C		Average Fosc 3V,25°C
		3.3k		4.32 MHz		3.56 MHz
20 pF		5.1k		2.83 MHz		2.8 MHz
20 pF		10k		1.62MHz		1.57 MHz
		10k		1.62MHz		1.57 MHz
		100k		184 KHz		187 KHz
		3.3k		1.39 MHz		1.35 MHz
100 pF		5.1k		950 KHz		930 KHz
100 pF		10k		500 KHz		490 KHz
		10k		500 KHz		490 KHz
		100k		54KHz		55 KHz
		3.3k		580 KHz		550 KHz
300 pF		5.1k		390 KHz		380 KHz
300 pF		10k		200 KHz		200 KHz
		10k		200 KHz		200 KHz
		100k		21 KHz		21 KHz

NOTE

1.Measured on DIP packages.

2.For design reference only.

4.8CODE Option Register

The EM78P447N has one CODE option word that is not a part of the normal program memory. The option bits cannot be accessed during normal program execution.

Code Option Register and Customer ID Register arrangement distribution:

Word 0

Word 1

Bit12~Bit0

Bit12~Bit0

4.8.1 Code Option Register (Word 0)

Word 0

Bit12	Bit11	Bit10	Bit9	Bit8	Bit7	Bit6
-	-	EC	-	CLKS	ENWDTB	TYPE

Bit5 Bit4

HLF OSC

Bit3 Bit2 Bit1 Bit0

HLP PR2 PR1 PR0

Bit 12 、11 : Not used.

Reserved.

The bit set to “1” all the time.

Bit 10 (EC): Error recovery Bit.

	0: Enable
	1: Disable
Bit 9:	Not used.
	Reserved.
	The bit set to “0” all the time.

26 •	Product Specification (V1.1) 03.30.2005

(This specification is subject to change without further notice)

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Contents EM78P447N Elan Microelectronics Corporation Contents Specification Revision History General Description EM78P447NBWM PIN Assignment Symbol Pin No Type Function EM78P447NAP and EM78P447NAM Pin DescriptionEM78P447NAS Pin Description Power supply EM78P447NBP and EM78P447NBWM Pin DescriptionEM78P447NCK and EN78P447NCM Pin Description Function Description EM78P447NDK and EM78P447NDM Pin Description2 R1 Time Clock /Counter Operational Registers1 R0 Indirect Addressing Register 3 R2 Program Counter & StackCall RET Retl Reti FffhData Memory Configuration 7 R8~R1F and R20~R3E General Purpose Register 5 R4 RAM Select Register6 R5~R7 Port 5 ~ Port7 R5, R6 and R7 are I/O registersAccumulator Special Purpose Registers8 R3F Interrupt Status Register Control RegisterTCC Rate 3 IOC5 ~ IOC7 I/O Port Control RegisterIocb Wake-up Control Register for Port6 WDT RateIoce WDT Control Register WUEIocf Interrupt Mask Register ExieTCC and WDT Block Diagram TCC/WDT & PrescalerI/O Ports IODReset and Wake-up ResetUsage of Sleep1 and Sleep2 Mode SLEEP2 SLEEP1Address Name Reset Type Bit Summary of the Initialized Values for RegistersWUE7 WUE6 WUE5 WUE4 R3FISRExif Tcif IocbStatus of RST, T, and P of Status Register Previous status before resetPrevious value before reset Events that may Affect the T and P StatusController Reset Block Diagram InterruptOscillator Oscillator ModesMode Conditions Crystal Oscillator/Ceramic ResonatorsXTALSummary of Maximum Operating Speeds Fxt max.MHzHXT External RC Oscillator ModeOscillator Type Frequency Mode C1pF C2pF LXTCode Option Register Code Option Register WordPR2~PR0 are protect bits, protect type as following ProtectCustomer ID Register Word Power On ConsiderationsExternal Power On Reset Circuit Bit 12~0 Customer’s ID codeReset Residue-Voltage ProtectionInstruction Set Contw NOPDAA SlepRrca R Djza RDJZ R RRC RTiming Diagram AC Test Input/Output W aveformTa= 25 C, VDD= 5.0V±5%, VSS= DC Electrical CharacteristicSymbol Parameter Condition Min Typ Max Unit Items RatingAC Electrical Characteristic Symbol Parameter Conditions Min Typ Max UnitTa=- -40 C ~ 85 C, VDD=5V ±5%, VSS=0V Device characteristic Vih, Vil of TCC, /INT, /RESET PinPort5, Port6 Port7 Voh vs. Ioh,VDD=5V Port5, Port6, and Port7 Voh vs. Ioh, VDD=3V Vol/Iol VDD=5V Vol/Iol VDD=3V Vol/Iol 100 Vol/Iol WDT Cext=100pF, Typical RC OSC Frequency Typical ICC1 and ICC2 vs. Temperature Maximum ICC1 and ICC2 vs. Temperature Typical ISB1 and ISB2 vs. Temperature Maximum ISB1 and ISB2 vs. Temperature EM78P447N HXT ImA Lead plastic dual inline package（DIP）－ 300 mil Package Type Pin Count Package SizeLead plastic dual inline skinny package（DIP）－ 300 mil Lead plastic dual inline package（DIP）－ 600 mil838 27TYP EM78P447N