32. Module: MSSP (I2
參數(shù)資料
型號(hào)： PIC18F6627-I/PT
廠商： Microchip Technology
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 0K
描述： IC PIC MCU FLASH 48KX16 64TQFP
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
PIC18 J Series MCU Overview
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝： 160
系列： PIC® 18F
核心處理器： PIC
芯體尺寸： 8-位
速度： 40MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，HLVD，POR，PWM，WDT
輸入/輸出數(shù)： 54
程序存儲(chǔ)器容量： 96KB（48K x 16）
程序存儲(chǔ)器類型： 閃存
EEPROM 大小： 1K x 8
RAM 容量： 3.8K x 8
電壓 - 電源 (Vcc/Vdd)： 4.2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 12x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 64-TQFP
包裝： 托盤
產(chǎn)品目錄頁(yè)面： 644 (CN2011-ZH PDF)
配用： XLT64PT5-ND - SOCKET TRAN ICE 64MQFP/TQFP
AC164319-ND - MODULE SKT MPLAB PM3 64TQFP
2006 Microchip Technology Inc.
DS80221C-page 11
PIC18F6627/6722/8627/8722
32. Module: MSSP (I2C Mode)
It has been observed that, following a Power-on
Reset, I2C mode may not initialize properly by just
configuring the SCLx and SDAx pins as either
inputs or outputs. This has only been seen in a few
unique system environments.
A test of a statistically significant sample of pre-
production systems, across the voltage and
current range of the application's power supply,
should indicate if a system is susceptible to this
issue.
Work around
Before configuring the module for I2C operation:
1. Configure the SCLx and SDAx pins as outputs
by clearing their corresponding TRIS bits.
2. Force SCLx and SDAx low by clearing the
corresponding LAT bits.
3. While keeping the LAT bits clear, configure
SCLx and SDAx as inputs by setting their TRIS
bits.
Once this is done, use the SSPxCON1 and
SSPxCON2 registers to configure the proper I2C
mode as before.
Date Codes that pertain to this issue:
All engineering and production devices.
33. Module: MSSP (I2C Mode)
In I2C Master mode, the RCEN bit is set by soft-
ware to begin data reception, and cleared by the
peripheral after a byte is received. After a byte is
received, the device may take up to 80 TCY to clear
RCEN and 800 TCY during emulation.
Work around
Single byte receptions are typically not affected,
since the delay between byte receptions typically
is long enough for the RCEN bit to clear. For mul-
tiple byte receptions, the software must wait until
the bit is cleared by the peripheral before the next
byte can be received.
Date Codes that pertain to this issue:
All engineering and production devices.
34. Module: ECCP (PWM Mode)
When
the
PWM
auto-shutdown
feature
is
configured for automatic restart by setting the
PxRSEN bit (ECCPxDEL<7>), the pulse may
terminate immediately in a shutdown event. In
addition, the pulse may restart within the period if
the shutdown condition expires. This may result in
the generation of short pulses on the PWM
output(s).
Work around
Configure the auto-shutdown for software restart
by clearing the PxRSEN bit. The PWM can be re-
enabled
by
clearing
the
ECCPxASE
bit
(ECCPxAS<7>) after the shutdown condition
expires.
Date Codes that pertain to this issue:
All engineering and production devices.
35. Module: ECCP (PWM Mode)
When configured for half-bridge operation with
dead band (CCPxCON<7:6> = 10), the PWM out-
put may be corrupted for certain values of the
PWM duty cycle. This can occur when these
additional criteria are also met:
a non-zero, dead-band delay is specified
(PxDC6:PxDC0 > 0); and
the duty cycle has a value of 0 through 3, or
4n + 3 (n
≥ 1).
Work around
None.
Date Codes that pertain to this issue:
All engineering and production devices.
36. Module: CCP (PWM Mode)
Timer4 is not available as a clock source for either
CCP4
or
CCP5
in
any
PWM
mode
(CCPxCON<3:2> = 11). Selecting Timer4 as the
module’s clock source may cause the PWM output
to stop generating pulses.
Work around
To use CCP4 or CCP5 in PWM mode, use only
Timer2 as the clock source (T3CON<6,3> = 00).
Date Codes that pertain to this issue:
All engineering and production devices.
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PIC18F6627T-I/PT 功能描述:8位微控制器 -MCU 96 KB FL 4K RAM 70 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
PIC18F6628-E/PT 功能描述:8位微控制器 -MCU 96KB Flash 4KB RAM 1024 DataEE 12B ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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
PIC18F6628-I/PT 功能描述:8位微控制器 -MCU 96KB Flash 4KB RAM 1024 DataEE 12B ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度: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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