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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | PIC16LF628A-I/SS |
| 寤犲晢锛� | Microchip Technology |
| 鏂囦欢闋佹暩(sh霉)锛� | 11/180闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC MCU FLASH 2KX14 EEPROM 20SSOP |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 67 |
| 绯诲垪锛� | PIC® 16F |
| 鏍稿績铏曠悊鍣細 | PIC |
| 鑺珨灏哄锛� | 8-浣� |
| 閫熷害锛� | 20MHz |
| 閫ｉ€氭€э細 | UART/USART |
| 澶栧湇瑷�(sh猫)鍌欙細 | 娆犲妾㈡脯/寰�(f霉)浣�锛孭OR锛孭WM锛學DT |
| 杓稿叆/杓稿嚭鏁�(sh霉)锛� | 16 |
| 绋嬪簭瀛樺劜鍣ㄥ閲忥細 | 3.5KB锛�2K x 14锛� |
| 绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 | 闁冨瓨 |
| EEPROM 澶�?銆�?/td> | 128 x 8 |
| RAM 瀹归噺锛� | 224 x 8 |
| 闆诲 - 闆绘簮 (Vcc/Vdd)锛� | 2 V ~ 5.5 V |
| 鎸暕鍣ㄥ瀷锛� | 鍏�(n猫i)閮� |
| 宸ヤ綔婧害锛� | -40°C ~ 85°C |
| 灏佽/澶栨锛� | 20-SSOP锛�0.209"锛�5.30mm 瀵級 |
| 鍖呰锛� | 绠′欢 |
| 鐢�(ch菐n)鍝佺洰閷勯爜闈細 | 638 (CN2011-ZH PDF) |
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PIC16F627A/628A/648A
DS40044G-page 108
2009 Microchip Technology Inc.
FIGURE 14-11:
EXTERNAL POWER-ON
RESET CIRCUIT (FOR
SLOW VDD POWER-UP)
FIGURE 14-12:
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
FIGURE 14-13:
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
Note
1:
External Power-on Reset circuit is required
only if VDD power-up slope is too slow. The
diode D helps discharge the capacitor
quickly when VDD powers down.
2:
R < 40 k
惟 is recommended to make sure
that voltage drop across R does not violate
the device鈥檚 electrical specification.
3:
R1 = 100
惟 to 1 k惟 will limit any current
flowing into MCLR from external capacitor
C in the event of MCLR/VPP pin break-
down due to Electrostatic Discharge (ESD)
or Electrical Overstress (EOS).
C
R1
R
D
VDD
MCLR
PIC16F627A/628A/648A
VDD
Note
1:
This circuit will activate Reset when VDD
goes below (Vz + 0.7V) where Vz = Zener
voltage.
2:
Internal Brown-out Reset circuitry should
be disabled when using this circuit.
VDD
33k
10k
40k
VDD
MCLR
PIC16F627A/628A/648A
x
R1
R1 + R2
= 0.7 V
VDD
R2
40k
VDD
MCLR
PIC16F627A/628A/648A
R1
Q1
Note
1:
This brown-out circuit is less expensive,
albeit less accurate. Transistor Q1 turns off
when VDD is below a certain level such that:
2:
Internal Brown-out Reset should be
disabled when using this circuit.
3:
Resistors should be adjusted for the
characteristics of the transistor.
VDD x
R1
R1 + R2
= 0.7 V
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| PIC16LF628AT-I/MLG | 鍒堕€犲晢:Microchip Technology Inc 鍔熻兘鎻忚堪: |
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| PIC16LF628AT-I/SS045 | 鍒堕€犲晢:Microchip Technology Inc 鍔熻兘鎻忚堪: |
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