参数资料
型号: DS80C323-QND+T&R
厂商: Maxim Integrated Products
文件页数: 23/38页
文件大小: 0K
描述: IC MCU HI SPEED 18MHZ IND 44PLCC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 500
系列: 80C
核心处理器: 8051
芯体尺寸: 8-位
速度: 18MHz
连通性: EBI/EMI,SIO,UART/USART
外围设备: 电源故障复位,WDT
输入/输出数: 32
程序存储器类型: ROMless
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 带卷 (TR)
DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
3 of 38
Figure 1. Block Diagram
PIN DESCRIPTION
PIN
DIP
PLCC
TQFP
NAME
FUNCTION
40
44
38
VCC
+5V (+3V for DS80C323)
20
22, 23
16, 17
GND
Digital Circuit Ground
9
10
4
RST
Reset Input. The RST input pin contains a Schmitt voltage input to
recognize external active-high reset inputs. The pin also employs an
internal pulldown resistor to allow for a combination of wired OR
external reset sources. An RC is not required for power-up, as the device
provides this function internally.
18
20
14
XTAL2
19
21
15
XTAL1
Crystal Oscillator Pins. XTAL1 and XTAL2 provide support for
parallel-resonant, AT-cut crystals. XTAL1 acts also as an input in the
event that an external clock source is used in place of a crystal. XTAL2
serves as the output of the crystal amplifier.
29
32
26
PSEN
Program Store-Enable Output, Active Low. This signal is commonly
connected to external ROM memory as a chip enable. PSEN provides an
active-low pulse width of 2.25 XTAL1 cycles with a period of four
XTAL1 cycles. PSEN is driven high when data memory (RAM) is being
accessed through the bus and during a reset condition.
DS80C320/
DS80C323
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