参数资料
型号: DS2153Q-A7+T&R
厂商: Maxim Integrated Products
文件页数: 60/60页
文件大小: 0K
描述: IC TXRX E1 1-CHIP 5V 44-PLCC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 500
功能: 单芯片收发器
接口: E1
电路数: 1
电源电压: 4.75 V ~ 5.25 V
电流 - 电源: 65mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 带卷 (TR)
DS2153Q
9 of 60
3 PARALLEL PORT
The DS2153Q is controlled via a multiplexed bidirectional address/data bus by an external
microcontroller or microprocessor. The DS2153Q can operate with either Intel or Motorola bus timing
configurations. If the BTS pin is tied low, Intel timing will be selected; if tied high, Motorola timing will
be selected. All Motorola bus signals are listed in parentheses (). See the timing diagrams in Section 14
for more details. The multiplexed bus on the DS2153Q saves pins because the address information and
data information share the same signal paths. The addresses are presented to the pins in the first portion of
the bus cycle and data will be transferred on the pins during second portion of the bus cycle. Addresses
must be valid prior to the falling edge of ALE (AS), at which time the DS2153Q latches the address from
the AD0 to AD7 pins. Valid write data must be present and held stable during the later portion of the DS
or WR pulses. In a read cycle, the DS2153Q outputs a byte of data during the latter portion of the DS or
RD
pulses. The read cycle is terminated and the bus returns to a high-impedance state as RD transitions
high in Intel timing or as DS transitions low in Motorola timing.
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