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參數(shù)資料
| 型號(hào)： | PTPM749A |
| 廠(chǎng)商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | Microcontroller with TrackPoint microcode from IBM |
| 中文描述： | 8-BIT, MROM, MICROCONTROLLER, PQCC28 |
| 文件頁(yè)數(shù)： | 9/14頁(yè) |
| 文件大小： | 100K |
| 代理商： | PTPM749A |
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Philips Semiconductors
Product specification
TPM749
Microcontroller with TrackPoint
microcode from IBM
1996 May 01
9
AC ELECTRICAL CHARACTERISTICS
T
amb
= 0
°
C to +70
°
C, V
CC
= 5V
±
10%, V
SS
= 0V
4, 8
12MHz CLOCK
VARIABLE CLOCK
SYMBOL
PARAMETER
MIN
MAX
MIN
MAX
UNIT
1/t
CLCL
Oscillator frequency:
3.5
12
MHz
External Clock (Figure 3)
t
CHCX
High time
20
20
ns
t
CLCX
Low time
20
20
ns
t
CLCH
Rise time
20
20
ns
t
CHCL
Fall time
20
20
ns
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has five characters. The first character is always
‘t’ (= time). The other characters, depending on their positions,
indicate the name of a signal or the logical status of that signal. The
designations are:
C – Clock
D – Input data
H – Logic level high
L – Logic level low
Q – Output data
T – Time
V – Valid
X – No longer a valid logic level
Z – Float
t
CHCL
t
CLCL
t
CLCH
t
CHCX
V
CC
–0.5
0.45V
0.2 V
CC
+ 0.9
0.2 V
CC
– 0.1
t
CLCX
SU00297
Figure 3. External Clock Drive
0.2 V
CC
+ 0.9
0.2 V
CC
– 0.1
V
CC
–0.5
0.45V
SU00307
Figure 4. AC Testing Input/Output
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