參數(shù)資料
型號(hào): 935260531512
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 50/67頁
文件大小: 400K
代理商: 935260531512
1998 Apr 07
54
Philips Semiconductors
Product specication
8-bit Flash microcontrollers
P89C738; P89C739
Note
1. The operating frequency is limited to: 3.5 MHz
≤ fclk ≤ 40 MHz.
Table 35 External clock drive XTAL1
tQVWH
data set-up time
before WR
433
288
200
125
7tclk 150
ns
tWHQX
data hold time
after WR
33
13
21
5
tclk 50
ns
tRLAZ
address oat
delay after RD
0
0
0
0
0ns
SYMBOL
PARAMETER
VARIABLE CLOCK
UNIT
MIN.
MAX.
fclk
clock frequency
3.5
40
MHz
tCLCL
clock period
63
833
ns
tCHCX
high time
20
tclk tCLCX
ns
tCLCX
low time
20
tclk tCHCX
ns
tCLCH
rise time
20
ns
tCHCL
fall time
20
ns
tCY
cycle time (tCY = 12tclk)
0.75
10
s
SYMBOL
PARAMETER
12 MHz
16 MHz
24 MHz
40 MHz
VARIABLE CLOCK(1)
UNIT
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
MIN.
MAX.
Fig.29 External clock drive XTAL1.
handbook, full pagewidth
MLA856
t CHCX
t CLCX
tCLCL
t CLCH
t CHCL
VIH1
0.8 V
V IH1
VIH1
0.8 V
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