目录
段
数
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
5.16
5.17
5.18
5.19
5.20
5.21
5.22
标题
页面
数
数据总线引脚（ D15 - D0 ） .......................................... ............................. 5-7
总线控制引脚............................................... ....................................... 5-8
总线仲裁销............................................... ................................ 5-10
中断控制引脚............................................... ............................. 5-11
MC68302总线接口信号摘要............................................. 5-12
物理层串行接口引脚............................................. ......... 5-13
典型的串行接口引脚配置........................................... 5 14
NMSI1或ISDN接口引脚............................................. .................. 5-14
NMSI2端口或端口引脚............................................ ......................... 5-17
NMSI3端口或端口引脚或SCP销......................................... 5-18 .......
IDMA或端口引脚............................................. ................................. 5-19
IACK或PIO端口B引脚............................................ ............................ 5-20
定时器引脚................................................ ............................................. 5-20
并行I / O引脚具有中断功能.......................................... 5-22 ....
片选引脚.............................................. ...................................... 5-22
无连接引脚.............................................. ..................................... 5-23
何时使用上拉电阻............................................. .................. 5-23
第6节
电气特性
最大额定值................................................ .................................... 6-1
热特性................................................ .......................... 6-1
电源注意事项................................................ ............................. 6-2
功耗................................................ .................................... 6-3
直流电气特性............................................... .................... 6-4
直流电气特性， NMSI1在IDL模式................................ 6-5
AC电气规格，时钟时序............................................ 6-5
AC电气规格-IMP总线主控周期............................ 6-6
AC电气规格-DMA ............................................. .......... 6-13
AC电气规格，外部主
内部异步读/写周期............................................ 6-16
AC电气规格，外部主内部同步
读/写周期.............................................. ................................... 6-19
AC电气规格，内部主
内部读/写周期............................................. ....................... 6-23
AC电气规格，片选时间内
主................................................. ................................................. 6 -24
AC电气规格，片选时序外部主...... 6-25
AC电气规格，并行I / O .......................................... .. 6-26
AC电气规格，中断............................................. ... 6-27
AC电气规格，定时器............................................. 6-28 .......
AC电气规格串行通信端口。 ................ 6-29
AC电气规格， IDL定时............................................ .. 6-30
AC电气规格- GCI时序............................................ 。 6-32
AC电气规格-PCM时序........................................... 6 -34
AC电气规格， NMSI定时.......................................... 6 36
MC68302用户手册
xi
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.16
6.17
6.18
6.19
6.20
6.21
6.22
摩托罗拉
