UPD784938 datasheet(74/733 Pages) NEC

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UPD784938 Datasheet(PDF) 74 Page - NEC

Part #	UPD784938

Description	16-Bit Single-Chip Microcontrollers

Download	733 Pages

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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CHAPTER 3 CPU ARCHITECTURE

Preliminary User’s Manual U13987EJ1V0UM00

3.3 Base Area

The space from 0 to FFFFH comprises the base area. The base area is the object for the following uses:

• Reset entry address

• Interrupt entry address

• CALLT instruction entry address

• 16-bit immediate addressing mode (with instruction address addressing)

• 16-bit direct addressing mode

• 16-bit register addressing mode (with instruction address addressing)

• 16-bit register indirect addressing mode

• Short direct 16-bit memory indirect addressing mode

The vector table area, CALLT instruction table area and CALLF instruction entry area are allocated to the base area.

When the LOCATION 0 instruction is executed, the internal data area is located in the base area. Note that, in the internal

data area, program fetches cannot be performed from the internal high-speed RAM area or special function register (SFR) area.

Also, internal RAM area data should only be used after initialization has been performed.

Manufacturer	Part #	Datasheet	Description
NEC	UPD784938A	371Kb / 52P	16-BIT SINGLE-CHIP MICROCONTROLLER
Renesas Technology Corp	UPD784938AGF-XXX-3BA	692Kb / 104P	MOS INTEGRATED CIRCUITS 2001

Manufacturer	Part #	Datasheet	Description
Renesas Technology Corp	UPD78F1502AGK-GAK-AX	6Mb / 1031P	16-Bit Single-Chip Microcontrollers
NEC	UPD784214A	561Kb / 50P	16-BIT SINGLE-CHIP MICROCONTROLLERS
	UPD784915A	446Kb / 86P	16-BIT SINGLE-CHIP MICROCONTROLLERS
	UPD784915B	384Kb / 86P	16-BIT SINGLE-CHIP MICROCONTROLLERS
	UPD784224	687Kb / 92P	16/8-BIT SINGLE-CHIP MICROCONTROLLERS
Siemens Semiconductor G...	C167CR-16RM	1Mb / 67P	16-Bit CMOS Single-Chip Microcontrollers
NEC	UPD78363A	502Kb / 96P	16/8-BIT SINGLE-CHIP MICROCONTROLLERS
	UPD784035Y	503Kb / 94P	16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
	UPD784218	617Kb / 92P	16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
Siemens Semiconductor G...	C161V	3Mb / 260P	16-Bit CMOS Single-Chip Microcontrollers

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