參數(shù)資料
型號(hào): μPD705101
廠商: NEC Corp.
英文描述: 32 Bit Microprocessor(32 位微處理器)
中文描述: 32位微處理器(32位微處理器)
文件頁(yè)數(shù): 6/72頁(yè)
文件大小: 301K
代理商: ΜPD705101
μ
PD705101
6
1. PIN FUNCTIONS LIST
(1/2)
Pin Name
I/O
Function
Multiplexed Pin
D0-D31
3-state I/O
Data bus
A1-A23
3-state output
Address bus
UUCAS
Column address strobe (most significant byte)
ULCAS
Column address strobe (most significant byte)
LUCAS
Column address strobe (third byte)
LLCAS
Column address strobe (least significant byte)
RAS
Row address strobe/chip select
UUMWR
Memory write strobe (most significant byte)
ULMWR
Memory write strobe (second byte)
LUMWR
Memory write strobe (third byte)
LLMWR
Memory write strobe (least significant byte)
MRD
Memory read strobe
WE
DRAM write strobe
OE
DRAM read strobe
IORD
I/O read strobe
IOWR
I/O write strobe
REFRQ
DRAM refresh request
TC
CS1, CS2, CS7
Memory chip select
CS3-CS6
Memory chip select / I/O chip select
BCYST
Bus cycle start
BT16B
Input
Specifies bus size on boot
READY
Enables end of bus cycle
DMARQ0-DMARQ3
DMA request (CH0 through CH3)
DMAAK0-DMAAK3
Output
DMA enable (CH0 through CH3)
TC
DMA transfer end
REFRQ
RXD
Input
UART data input
TXD
Output
UART data output
SI
Input
CSI data input
PORT2
SO
Output
CSI data output
PORT1
SCLK
I/O
CSI clock I/O
PORT0
TI
Input
Timer 1 count clock input
TCLR
Timer 1 clear, start
TO10
Output
RPU pulse output
INTP10
TO11
INTP12
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