參數(shù)資料
型號: UPD784215AGC
廠商: NEC Corp.
英文描述: 16-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16位單晶片微控制器
文件頁數(shù): 59/100頁
文件大?。?/td> 561K
代理商: UPD784215AGC
Data Sheet U14121EJ2V0DS00
59
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
9.1 Memory Expansion
External program memory and data memory can be connected in two stages: 256 KB and 1 MB.
To connect the external memory, ports 4 through 6 and port 8 are used.
The external memory can be connected in the following two modes:
Multiplexed bus mode: The external memory is connected by using a time-division address/data bus. The
number of ports used when the external memory is connected can be reduced in this
mode.
Separate bus mode:
The external memory is connected by using an address bus and data bus independent
of each other. Because an external latch circuit is not necessary, this mode is useful for
reducing the number of components and mounting area on the printed wiring board.
9.2 Programmable Wait
Wait state(s) can be inserted to the memory space (00000H to FFFFFH) while the RD and WR signals are active.
In addition, there is an address wait function that extends the active period of the ASTB signal to gain the address
decode time.
相關(guān)PDF資料
PDF描述
UPD784215AGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784215A 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214A 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AGC 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD784218AGC-382-8EU-NRE-A 制造商:Renesas Electronics Corporation 功能描述:
UPD784218AGC-382-8EU-SES-A 制造商:Renesas Electronics Corporation 功能描述:
UPD784935AGF-113-3BA 制造商:NEC Electronics Corporation 功能描述:
UPD784938AGF-188-3BA 制造商:NEC Electronics Corporation 功能描述:
UPD789104AMC(A)-968-5A4-E2 制造商:Renesas Electronics Corporation 功能描述: