參數(shù)資料
型號: 83C166
廠商: SIEMENS AG
英文描述: 16-Bit CMOS Single-Chip Microcontroller
中文描述: 16位CMOS單芯片微控制器
文件頁數(shù): 35/52頁
文件大?。?/td> 541K
代理商: 83C166
SAB 80C166/83C166
Semiconductor Group
34
AC Characteristics
External Clock Drive XTAL1
V
CC
= 5 V
±
10 %;
T
A
= 0 to +70 C
T
A
= -40 to +85 C
V
SS
= 0 V
for SAB 83C166-5M, SAB 80C166-M
for SAB 83C166-5M-T3, SAB 80C166-M-T3
Figure 11
External Clock Drive XTAL1
Memory Cycle Variables
The timing tables below use three variables which are derived from registers SYSCON and
BUSCON1 and represent the special characteristics of the programmed memory cycle. The
following table describes, how these variables are to be computed.
Parameter
Symbol
Max. CPU Clock
= 20 MHz
Variable CPU Clock
1/2TCL = 1 to 20 MHz
Unit
min.
max.
25
min.
25
max.
500
Oscillator period
TCL SR 25
t
1
SR 6
t
2
SR 6
t
3
SR –
t
4
SR –
ns
High time
6
ns
Low time
6
ns
Rise time
5
5
ns
Fall time
5
5
ns
Description
ALE Extension
Symbol Values
t
A
t
C
t
F
TCL * <ALECTL>
Memory Cycle Time Waitstates
2TCL * (15 - <MCTC>)
Memory Tristate Time
2TCL * (1 - <MTTC>)
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