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參數(shù)資料
| 型號(hào)： | BU8272GUW-E2 |
| 廠商： | Rohm Semiconductor |
| 文件頁(yè)數(shù)： | 17/17頁(yè) |
| 文件大小： | 0K |
| 描述： | IC EXPANDER GPIO LSI 35-VBGA |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 接口： | 串行 |
| 輸入/輸出數(shù)： | 20 |
| 中斷輸出： | 是 |
| 頻率 - 時(shí)鐘： | 400kHz |
| 電源電壓： | 1.65 V ~ 1.95 V，1.65 V ~ 3.45 V |
| 工作溫度： | -25°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 36-VFBGA |
| 供應(yīng)商設(shè)備封裝： | VBGA035W040 |
| 包裝： | 帶卷 (TR) |
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2001 Microchip Technology Inc.
DS30292C-page 7
PIC16F87X
TABLE 1-1:
PIC16F873 AND PIC16F876 PINOUT DESCRIPTION
Pin Name
DIP
Pin#
SOIC
Pin#
I/O/P
Type
Buffer
Type
Description
OSC1/CLKIN
9
I
ST/CMOS(3) Oscillator crystal input/external clock source input.
OSC2/CLKOUT
10
O
—
Oscillator crystal output. Connects to crystal or resonator in
crystal oscillator mode. In RC mode, the OSC2 pin outputs
CLKOUT which has 1/4 the frequency of OSC1, and denotes
the instruction cycle rate.
MCLR/VPP
1
I/P
ST
Master Clear (Reset) input or programming voltage input. This
pin is an active low RESET to the device.
PORTA is a bi-directional I/O port.
RA0/AN0
2
I/O
TTL
RA0 can also be analog input0.
RA1/AN1
3
I/O
TTL
RA1 can also be analog input1.
RA2/AN2/VREF-
4
I/O
TTL
RA2 can also be analog input2 or negative analog
reference voltage.
RA3/AN3/VREF+
5
I/O
TTL
RA3 can also be analog input3 or positive analog
reference voltage.
RA4/T0CKI
6
I/O
ST
RA4 can also be the clock input to the Timer0
module. Output is open drain type.
RA5/SS/AN4
7
I/O
TTL
RA5 can also be analog input4 or the slave select
for the synchronous serial port.
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-up on all inputs.
RB0/INT
21
I/O
TTL/ST(1)
RB0 can also be the external interrupt pin.
RB1
22
I/O
TTL
RB2
23
I/O
TTL
RB3/PGM
24
I/O
TTL
RB3 can also be the low voltage programming input.
RB4
25
I/O
TTL
Interrupt-on-change pin.
RB5
26
I/O
TTL
Interrupt-on-change pin.
RB6/PGC
27
I/O
TTL/ST(2)
Interrupt-on-change pin or In-Circuit Debugger pin. Serial
programming clock.
RB7/PGD
28
I/O
TTL/ST(2)
Interrupt-on-change pin or In-Circuit Debugger pin. Serial
programming data.
PORTC is a bi-directional I/O port.
RC0/T1OSO/T1CKI
11
I/O
ST
RC0 can also be the Timer1 oscillator output or Timer1
clock input.
RC1/T1OSI/CCP2
12
I/O
ST
RC1 can also be the Timer1 oscillator input or Capture2
input/Compare2 output/PWM2 output.
RC2/CCP1
13
I/O
ST
RC2 can also be the Capture1 input/Compare1 output/
PWM1 output.
RC3/SCK/SCL
14
I/O
ST
RC3 can also be the synchronous serial clock input/output
for both SPI and I2C modes.
RC4/SDI/SDA
15
I/O
ST
RC4 can also be the SPI Data In (SPI mode) or
data I/O (I2C mode).
RC5/SDO
16
I/O
ST
RC5 can also be the SPI Data Out (SPI mode).
RC6/TX/CK
17
I/O
ST
RC6 can also be the USART Asynchronous Transmit or
Synchronous Clock.
RC7/RX/DT
18
I/O
ST
RC7 can also be the USART Asynchronous Receive or
Synchronous Data.
VSS
8, 19
P
—
Ground reference for logic and I/O pins.
VDD
20
P
—
Positive supply for logic and I/O pins.
Legend: I = input
O = output
I/O = input/output
P = power
— = Not used
TTL = TTL input
ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
2: This buffer is a Schmitt Trigger input when used in Serial Programming mode.
3: This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
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