参数资料
型号: PIC16C765-I/L
厂商: Microchip Technology
文件页数: 134/165页
文件大小: 0K
描述: IC MCU OTP 8KX14 USB 44PLCC
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 27
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 24MHz
连通性: SCI,UART/USART,USB
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 33
程序存储器容量: 14KB(8K x 14)
程序存储器类型: OTP
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 4.35 V ~ 5.25 V
数据转换器: A/D 8x8b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
产品目录页面: 636 (CN2011-ZH PDF)
配用: AC164309-ND - MODULE SKT FOR PM3 44PLCC
ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
444-1001-ND - DEMO BOARD FOR PICMICRO MCU
PIC16C745/765
DS41124C-page 70
Preliminary
2000 Microchip Technology Inc.
REGISTER 10-11: BUFFER DESCRIPTOR STATUS. BITS READ BY THE MCU
(BDndST: 1A0h, 1A4h, 1A8h, 1ACh, 1B0h, 1B4h)
REGISTER 10-12: BUFFER DESCRIPTOR BYTE COUNT
(BDndBC: 1A1h, 1A5h, 1A9h, 1ADh, 1B1h, 1B5h)
R/W-0
R/W-X
U-X
UOWN
DATA0/1
PID3
PID2
PID1
PID0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
-n = Value at POR reset
X = Don’t care
bit7
bit0
bit 7:
UOWN: USB Own
This UOWN bit determines who currently owns the buffer. The SIE writes a 0 to this bit when it has com-
pleted a token. This byte of the BD should always be the last byte the MCU updates when it initializes a
BD. Once the BD has been assigned to the USB, the MCU should not change it in any way.
1
= USB has exclusive access to the BD. The MCU should not modify the BD or buffer.
0
= The MCU has exclusive access to the BD. The USB ignores all other fields in the BD.
bit 6:
DATA0/1: This bit defines the type of data toggle packet that was transmitted or received
1
= Data 1 packet
0
= Data 0 packet
bit 5-2:
PID<3:0>: Packet Identifier
The received token PID value.
bit 1-0:
Reserved: Read as 'X'
Note:
Recommend that users not use BSF, BCF due to the dual functionality of this register.
U-X
R/W-X
BC3
BC2
BC1
BC0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
-n = Value at POR reset
X = Don’t care
bit7
bit0
bit 7-4:
Reserved: Read as ’X’
bit 3-0:
BC<3:0>: The Byte Count bits represent the number of bytes that will be transmitted for an IN TOKEN or
received during an OUT TOKEN. Valid byte counts are 0 - 8. The SIE will change this field upon the com-
pletion of an OUT or SETUP token with the actual byte count of the data received.
745cov.book Page 70 Wednesday, August 2, 2000 8:24 AM
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