IBM EM78P447N manual The Summary of the Initialized Values for Registers

EM78P447N

8-Bit Microcontroller with OTP ROM

NOTE

After waking up from the SLEEP2 mode, WDT is automatically enabled. The WDT enabled/disabled operation after waking up from SLEEP2 mode should be appropriately defined in the software.

To avoid reset from occurring when the port6 status changed interrupt enters into interrupt vector or is used to wake-up the MCU, the WDT prescaler must be set above 1:1 ratio.

Table 7 The Summary of the Initialized Values for Registers

	Address	Name	Reset Type	Bit 7			Bit 6				Bit 5				Bit 4				Bit 3	Bit 2		Bit 1	Bit 0
			Bit Name	C57			C56				C55				C54				C53	C52		C51	C50
	N/A	IOC5	Type	A		B	A		B		A		B		A		B	-		-	-		-
			Power-On	0		1	0		1	0			1	0			1	1		1	1		1
			/RESET and WDT	0		1	0		1	0			1	0			1	1		1	1		1
			Wake-Up from Pin	0		P	0		P	0			P	0			P		P	P		P	P
			Change
	N/A	IOC6	Bit Name	C67			C66				C65				C64				C63	C62		C61	C60
			Power-On		1			1				1				1			1	1		1	1
			/RESET and WDT		1			1				1				1			1	1		1	1
			Wake-Up from Pin		P			P				P				P			P	P		P	P
			Change
	N/A	IOC7	Bit Name	C77			C76				C75				C74				C73	C72		C71	C70
			Power-On		1			1				1				1			1	1		1	1
			/RESET and WDT		1			1				1				1			1	1		1	1
			Wake-Up from Pin		P			P				P				P			P	P		P	P
			Change
	N/A	CONT	Bit Name	/PHEN			/INT					TS				TE			PAB	PSR2		PSR1	PSR0
			Power-On		1			0				1				1			1	1		1	1
			/RESET and WDT		1			P				1				1			1	1		1	1
			Wake-Up from Pin		P			P				P				P			P	P		P	P
			Change
	0x00	R0(IAR)	Bit Name		-			-				-				-		-		-	-		-
			Power-On		U			U				U				U			U	U		U	U
			/RESET and WDT		P			P				P				P			P	P		P	P
			Wake-Up from Pin		P			P				P				P			P	P		P	P
			Change
	0x01	R1(TCC)	Bit Name		-			-				-				-			-	-		-	-
			Power-On		0			0				0				0			0	0		0	0
			/RESET and WDT		0			0				0				0			0	0		0	0
			Wake-Up from Pin		P			P				P				P			P	P		P	P
			Change
	0x02	R2(PC)	Bit Name		-			-				-				-			-	-		-	-
			Power-On		1			1				1				1			1	1		1	1
			/RESET and WDT		1			1				1				1			1	1		1	1
			Wake-Up from Pin	**0/P			**0/P				**0/P				**0/P				**0/P	**0/P		**0/P	**0/P
			Change
	0x03	R3(SR)	Bit Name		GP		PS1				PS0					T			P	Z		DC	C
			Power-On		0			0				0				1			1	U		U	U
			/RESET and WDT		0			0				0				t			t	P		P	P
			Wake-Up from Pin		P			P				P				t			t	P		P	P
			Change
	0x04	R4(RSR)	Bit Name	RSR.1			RSR.0					-				-			-	-		-	-
			Power-On		0			0				U				U			U	U		U	U
			/RESET and WDT		0			0				P				P			P	P		P	P
Product Specification (V1.1) 03.30.2005																							• 19

(This specification is subject to change without further notice)