摘要:
A semiconductor integrated circuit device comprises a central processing unit (CPU), a first external terminal (EA0-EA16), and an electrically erasable and programmable nonvolatile flash memory (FMRY), wherein the semiconductor integrated circuit has a first operation mode in which the flash memory receives an address signal from the central processing unit executing a control program to erase and write data from and into the flash memory, and wherein the semiconductor integrated circuit has a second operation mode in which the flash memory receives an address signal on the external terminal to write data supplied from the outside of the semiconductor integrated circuit device into the flash memory.
摘要:
A semiconductor integrated circuit device comprises a central processing unit (CPU), a first external terminal (EA0-EA16), and an electrically erasable and programmable nonvolatile flash memory (FMRY), wherein the semiconductor integrated circuit has a first operation mode in which the flash memory receives an address signal from the central processing unit executing a control program to erase and write data from and into the flash memory, and wherein the semiconductor integrated circuit has a second operation mode in which the flash memory receives an address signal on the external terminal to write data supplied from the outside of the semiconductor integrated circuit device into the flash memory.
摘要:
A semiconductor integrated circuit device comprises a central processing unit (CPU), a first external terminal (EA0-EA16), and an electrically erasable and programmable nonvolatile flash memory (FMRY), wherein the semiconductor integrated circuit has a first operation mode in which the flash memory receives an address signal from the central processing unit executing a control program to erase and write data from and into the flash memory, and wherein the semiconductor integrated circuit has a second operation mode in which the flash memory receives an address signal on the external terminal to write data supplied from the outside of the semiconductor integrated circuit device into the flash memory.
摘要:
A semiconductor integrated circuit device comprises a central processing unit (CPU), a first external terminal (EA0-EA16), and an electrically erasable and programmable nonvolatile flash memory (FMRY), wherein the semiconductor integrated circuit has a first operation mode in which the flash memory receives an address signal from the central processing unit executing a control program to erase and write data from and into the flash memory, and wherein the semiconductor integrated circuit has a second operation mode in which the flash memory receives an address signal on the external terminal to write data supplied from the outside of the semiconductor integrated circuit device into the flash memory.
摘要:
A semiconductor integrated circuit device comprises a central processing unit (CPU), a first external terminal (EA0-EA16), and an electrically erasable and programmable nonvolatile flash memory (FMRY), wherein the semiconductor integrated circuit has a first operation mode in which the flash memory receives an address signal from the central processing unit executing a control program to erase and write data from and into the flash memory, and wherein the semiconductor integrated circuit has a second operation mode in which the flash memory receives an address signal on the external terminal to write data supplied from the outside of the semiconductor integrated circuit device into the flash memory.
摘要:
A semiconductor integrated circuit device on a semiconductor chip comprises an address bus (ABUS), a data bus (DBUS, HDBUS, LDBUS), a central processing unit (CPU) being capable of processing data of a plurality of bits, and a flash memory (FMRY) having a plurality of memory cells (MC) arranged so as to be simultaneously erasable, said flash memory including a plurality of memory arrays (ARY0-ARY7) and being responsive to accessing from said central processing unit via said address bus and providing one data of a plurality of bits within a plurality of data stored therein to said central processing unit via said data bus in a manner in which each memory array outputs one bit (D0-C7) of said plurality of bits constituting said one data.
摘要:
A semiconductor integrated circuit device comprises a central processing unit (CPU), a first external terminal (EA0-EA16), and an electrically erasable and programmable nonvolatile flash memory (FMRY), wherein the semiconductor integrated circuit has a first operation mode in which the flash memory receives an address signal from the central processing unit executing a control program to erase and write data from and into the flash memory, and wherein the semiconductor integrated circuit has a second operation mode in which the flash memory receives an address signal on the external terminal to write data supplied from the outside of the semiconductor integrated circuit device into the flash memory.
摘要:
A semiconductor integrated circuit device on a semiconductor chip comprises an address bus (ABUS), a data bus (DBUS, HDBUS, LDBUS), a central processing unit (CPU) being capable of processing data of a plurality of bits, and a flash memory (FMRY) having a plurality of memory cells (MC) arranged so as to be simultaneously erasable, said flash memory including a plurality of memory arrays (ARY0-ARY7) and being responsive to accessing from said central processing unit via said address bus and providing one data of a plurality of bits within a plurality of data stored therein to said central processing unit via said data bus in a manner in which each memory array outputs one bit (D0-C7) of said plurality of bits constituting said one data.
摘要:
A single-chip microcomputer comprising: a first bus having a central processing unit and a cache memory connected therewith; a second bus having a dynamic memory access control circuit and an external bus interface connected therewith; a break controller for connecting the first bus and the second bus selectively; a third bus having a peripheral module connected therewith and having a lower-speed bus cycle than the bus cycles of the first and second buses; and a bus state controller for effecting a data transfer and a synchronization between the second bus and the third bus. The single-chip microcomputer has the three divided internal buses to reduce the load capacity upon the signal transmission paths so that the signal transmission can be accomplished at a high speed. Moreover, the peripheral module required to have no operation speed is isolated so that the power dissipation can be reduced.
摘要:
A microcomputer that is easy to use and connected direct to such memories as dynamic and static RAM's and to other peripheral circuits. The microcomputer has strobe signal output terminals CASH * , CASL * and RAS * for direct connection to a dynamic RAM, and chip select signal output terminals CSO * through CS6 * for outputting a chip select signal in parallel with the output from the strobe signal output terminals. The microcomputer further includes address output terminals for outputting a non-multiplexed or multiplexed address signal as needed, and data I/O terminals for selectively outputting the address signal to comply with a multiple-bus interface scheme.