參數(shù)資料
型號(hào): UPD70320GJ-8-5BG
廠(chǎng)商: NEC Corp.
英文描述: V25TM 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述: V25TM 16/8-BIT單片機(jī)
文件頁(yè)數(shù): 8/74頁(yè)
文件大小: 439K
代理商: UPD70320GJ-8-5BG
8
μ
PD70320
1.2 Non-port Pins
Pin Name
Input/Output
Function
TxD0
Output
Serial data output
TxD1
RxD0
Input
Serial data input
RxD1
CTS0
Input & output
CTS input in asynchronous mode, receive clock input/output in I/O interface mode
CTS1
Input
CTS input
REFRQ
Output
DRAM refresh pulse output
V
TH
Input
Comparator reference voltage input
RESET
Reset signal input
EA
External memory access (connect to GND via a resistor (3 to 10 k
))
X1
Input
Used to connect crystal resonator/ceramic resonator for oscillating system clock.
External clock is entered by entering reverse phase clock to both X1 and X2 pins.
X2
D0 to D7
Input & output
8-bit data bus
A0 to A19
Output
20-bit address output
MREQ
Output used to indicate that memory bus cycle has been started
MSTB
Memory read/memory write strobe output
R/W
Read cycle/write cycle ID signal output
IOSTB
I/O read/I/O write strobe output
V
DD
Positive power supply pins (all pins should be connected)
GND
GND pins (all pins should be connected)
IC
Internally connected (connect individually to V
DD
via a resistor (3 to 10 k
))
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD70320GJA-5BG 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:16-Bit Microcontroller
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