參數(shù)資料
型號(hào): SAB88C166
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 16-Bit CMOS Single-Chip Microcontrollers with/without oscillator prescaler with 32 KByte Flash EPROM
中文描述: 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP100
文件頁(yè)數(shù): 34/58頁(yè)
文件大小: 611K
代理商: SAB88C166
SAB 88C166(W)
Semiconductor Group
33
Testing Waveforms
Figure 13
Input Output Waveforms
Figure 14
Float Waveforms
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.
Description
Symbol Values
t
A
t
C
t
F
ALE Extension
TCL x <ALECTL>
Memory Cycle Time Waitstates
2TCL x (15 – <MCTC>)
Memory Tristate Time
2TCL x (1 – <MTTC>)
AC inputs during testing are driven at 2.4 V for a logic ‘1’ and 0.4 V for a logic ‘0’.
Timing measurements are made at
V
IH
min for a logic ‘1’ and
V
IL
max for a logic ‘0’.
For timing purposes a port pin is no longer floating when a 100 mV change from load
voltage occurs, but begins to float when a 100 mV change from the oaded
V
OH
/
V
OL
evel occurs
(
I
OH
/
I
OL
= 20 mA).
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