參數(shù)資料
型號(hào): PIC16C54C-20I/P
廠(chǎng)商: Microchip Technology
文件頁(yè)數(shù): 49/194頁(yè)
文件大小: 0K
描述: IC MCU OTP 512X12 18DIP
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 25
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 12
程序存儲(chǔ)器容量: 768B(512 x 12)
程序存儲(chǔ)器類(lèi)型: OTP
RAM 容量: 25 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 18-DIP(0.300",7.62mm)
包裝: 管件
配用: 309-1059-ND - ADAPTER 18 ZIF BD W/18SO PLUGS
DVA16XP180-ND - ADAPTER DEVICE FOR MPLAB-ICE
AC164001-ND - MODULE SKT PROMATEII 18/28DIP
其它名稱(chēng): PIC16C54C-20I/PR
PIC16C54C-20I/PR-ND
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PIC18F2450/4450
DS39760A-page 140
Advance Information
2006 Microchip Technology Inc.
14.4.1.3
BDnSTAT Register (SIE Mode)
When the BD and its buffer are owned by the SIE, most
of the bits in BDnSTAT take on a different meaning. The
configuration is shown in Register 14-6. Once UOWN is
set, any data or control settings previously written there
by the user will be overwritten with data from the SIE.
The BDnSTAT register is updated by the SIE with the
token Packet Identifier (PID) which is stored in
BDnSTAT<5:3>.
The
transfer
count
in
the
corresponding BDnCNT register is updated. Values
that overflow the 8-bit register carry over to the two
most
significant
digits
of
the
count,
stored
in
BDnSTAT<1:0>.
14.4.2
BD BYTE COUNT
The byte count represents the total number of bytes
that will be transmitted during an IN transfer. After an IN
transfer, the SIE will return the number of bytes sent to
the host.
For an OUT transfer, the byte count represents the
maximum number of bytes that can be received and
stored in USB RAM. After an OUT transfer, the SIE will
return the actual number of bytes received. If the
number of bytes received exceeds the corresponding
byte count, the data packet will be rejected and a NAK
handshake will be generated. When this happens, the
byte count will not be updated.
The 10-bit byte count is distributed over two registers.
The lower 8 bits of the count reside in the BDnCNT
register. The upper two bits reside in BDnSTAT<1:0>.
This represents a valid byte range of 0 to 1023.
14.4.3
BD ADDRESS VALIDATION
The BD Address register pair contains the starting RAM
address location for the corresponding endpoint buffer.
For an endpoint starting location to be valid, it must fall
in the range of the USB RAM, 400h to 7FFh. No
mechanism is available in hardware to validate the BD
address.
If the value of the BD address does not point to an
address in the USB RAM, or if it points to an address
within another endpoint’s buffer, data is likely to be lost
or overwritten. Similarly, overlapping a receive buffer
(OUT endpoint) with a BD location in use can yield
unexpected
results.
When
developing
USB
applications, the user may want to consider the
inclusion of software-based address validation in their
code.
REGISTER 14-6:
BDnSTAT: BUFFER DESCRIPTOR n STATUS REGISTER (BD0STAT THROUGH
BD63STAT), SIE MODE (DATA RETURNED BY THE SIDE TO THE
MICROCONTROLLER)
R/W-x
U-x
R/W-x
UOWN
PID3
PID2
PID1
PID0
BC9
BC8
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
UOWN: USB Own bit
1
= The SIE owns the BD and its corresponding buffer
bit 6
Reserved: Not written by the SIE
bit 5-2
PID3:PID0: Packet Identifier bits
The received token PID value of the last transfer (IN, OUT or SETUP transactions only).
bit 1-0
BC9:BC8: Byte Count 9 and 8 bits
These bits are updated by the SIE to reflect the actual number of bytes received on an OUT transfer
and the actual number of bytes transmitted on an IN transfer.
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PIC16C54C-40/P 功能描述:8位微控制器 -MCU .75KB 25 RAM 12 I/O 40MHz PDIP18 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16C54C-40/SO 功能描述:8位微控制器 -MCU .75KB 25 RAM 12 I/O 40MHz SOIC18 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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PIC16C54CT-04/SO092 制造商:Microchip Technology Inc 功能描述: