參數(shù)資料
型號： PIC16LC926T-I/L
廠商： Microchip Technology
文件頁數(shù)： 16/24頁
文件大?。?/td> 0K
描述： IC MCU CMOS 20MHZ 8K W/LCD68PLCC
標準包裝： 300
系列： PIC® 16C
核心處理器： PIC
芯體尺寸： 8-位
速度： 20MHz
連通性： I²C，SPI
外圍設備： 欠壓檢測/復位，LCD，POR，PWM，WDT
輸入/輸出數(shù)： 25
程序存儲器容量： 14KB（8K x 14）
程序存儲器類型： OTP
RAM 容量： 336 x 8
電壓 - 電源 (Vcc/Vdd)： 2.5 V ~ 5.5 V
數(shù)據(jù)轉換器： A/D 5x10b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 68-LCC（J 形引線）
包裝： 帶卷 (TR)
CS61584A
50
DS261PP5
13.2
Power Supply
As shown in Figure 27, the CS61584A operates
from a 3.3 Volt or 5.0 Volt supply. Separate power
and ground pins provide internal isolation. The best
way to configure the power supplies is to connect
all of the supply pins together at the device. The
various ground pins must not be more negative than
AGND. A 4.99 k
±1% resistor must be connected
from BGREF to ground to provide an internal cur-
rent reference.
De-coupling and filtering of the power supplies is
crucial for the proper operation of the analog cir-
cuits. A capacitor should be connected between
each supply and its respective ground. For capaci-
tors smaller than 1 F, use mylar or ceramic capac-
itors and place them as close as possible to their
respective power supply pins. Wire-wrap bread
boarding of the line interface is not recommended
because lead resistance and inductance defeat the
function of the de-coupling capacitors.
13.3
Quartz Crystal Specifications
When a reference clock signal is not available, a
quartz crystal operating at the 8X rate can be con-
nected across the REFCLK and XTALOUT pins.
The crystal must be AT-cut and fundamental mode.
The
minimum
specifications
are
shown
in
Table 14. Based on these specifications, quartz
crystals suggested for use with the CS61584A are
shown in Table 15.
13.4
Crystal Oscillator Specifications
When a reference clock signal is not available, a
CMOS crystal oscillator operating at either the 1X
or 8X rate can be connected at the REFCLK pin.
The oscillator must have a minimum symmetry of
40-60% and minimum stability of ±100 ppm for T1
and E1 applications. Based on these specifications,
crystal oscillators suggested for use with the
Parameter
Min
Typ
Max
Unit
T1 parallel resonant
frequency
-
12.352
-
MHz
E1 parallel resonant
frequency
-
16.384
-
MHz
Resonant frequency
error (CL = 20 pF)
-50
-
+50
ppm
Temperature drift
(over system limits)
-100
-
+100
ppm
Drive level
-
500
W
Series resistance
-
50
Shunt capacitance
-
7
pF
Aging
-5
-
+5
ppm/yr
Table 14. Quartz Crystal Specifications
Manufacturer
Part Number
Package Type
M-tron
397-316
ATS-49
through-hole
522-372
ATSM-49
surface mount
SaRonix
SRX5769
SRX5772
HC-49S
through-hole
SRX5770
SRX5773
49SMLB
surface mount
NOTE: Frequency tolerances are ±32 ppm with a -
40 to +85 °C operating temperature range.
Table 15. Suggested Quartz Crystals
Manufacturer
Part Number
Contact Number
Comclok
CT31CH
(800)333-9825
CTS
CXO-65HG-5-I (815)786-8411
M-tron
MH26TAD
(800)762-8800
SaRonix
NTH250A
(800)227-8974
NOTE: Frequency tolerances are ±32 ppm with a -
40 to +85 °C operating temperature range.
All are 8-pin DIP packages and can be tristated.
Table 16. Suggested Crystal Oscillators
CS61584A
50
DS261F1
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