参数资料
型号: P83C251SB16
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: HIGH-PERFORMANCE CHMOS MICROCONTROLLER
中文描述: 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 28/35页
文件大小: 186K
代理商: P83C251SB16
28
PRELIMINARY
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
5.3.3
DEFINITION OF REAL-TIME WAIT SYMBOLS
5.3.4
EXTERNAL BUS CYCLES, REAL-TIME WAIT STATES
Figure 13. External Bus Cycle: Code Fetch/Data Read (Nonpage Mode)
Table 12. Real-time Wait Timing Symbol Definitions
Signals
Conditions
A
Address
L
Low
D
Data
X
Hold
C
WCLK
V
Setup
Y
WAIT#
W
WR#
R
RD#/PSEN#
A0-A7
WCLK
ALE
RD#/PSEN#
WAIT#
P0
P2
A8-A15
A5000-01
State 1
State 2
State 3
State 1 (next cycle)
T
CLYX
min
T
CLYV
A0-A7
D0-D7
stretched
A8-A15
stretched
RD#/PSEN# stretched
T
CLYX
max
T
RLYV
T
RLYX
max
T
RLYX
min
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