參數(shù)資料
型號: DSPIC33FJ32GP202T-I/SS
廠商: Microchip Technology
文件頁數(shù): 7/176頁
文件大?。?/td> 0K
描述: IC DSC 16BIT 32KB FLASH 28SSOP
標(biāo)準(zhǔn)包裝: 2,100
系列: dsPIC™ 33F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 40 MIP
連通性: I²C,IrDA,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 21
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x10b/12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
103
AT89C5131
4136C–USB–04/05
If the AA bit is reset during a transfer, SSLC will transmit the last byte of the transfer and
enter state C0h or C8h. SSLC is switched to the not addressed slave mode and will
ignore the master receiver if it continues the transfer. Thus the master receiver receives
all 1’s as serial data. While AA is reset, SSLC does not respond to its own slave
address. However, the TWI bus is still monitored and address recognition may be
resume at any time by setting AA. This means that the AA bit may be used to tempo-
rarily isolate SSLC from the TWI bus.
Miscellaneous States
There are two SSCS codes that do not correspond to a define SSLC hardware state
(see Table 87). These codes are discuss hereafter.
Status F8h indicates that no relevant information is available because the serial interrupt
flag is not set yet. This occurs between other states and when SSLC is not involved in a
serial transfer.
Status 00h indicates that a bus error has occurred during an SSLC serial transfer. A bus
error is caused when a START or a STOP condition occurs at an illegal position in the
format frame. Examples of such illegal positions happen during the serial transfer of an
address byte, a data byte, or an acknowledge bit. When a bus error occurs, SI is set. To
recover from a bus error, the STO flag must be set and SI must be cleared. This causes
SSLC to enter the not addressed slave mode and to clear the STO flag (no other bits in
SSCON are affected). The SDA and SCL lines are released and no STOP condition is
transmitted.
Notes
SSLC interfaces to the external TWI bus via two port pins: SCL (serial clock line) and
SDA (serial data line). To avoid low level asserting on these lines when SSLC is
enabled, the output latches of SDA and SLC must be set to logic 1.
Bit Frequency (kHz)
CR2
CR1
CR0
FOSCA= 12 MHz
FOSCA = 16 MHz
FOSCA divided by
0
47
62.5
256
0
1
53.5
71.5
224
0
1
0
62.5
83
192
0
1
75
100
160
1
0
12.5
16.5
960
1
0
1
100
-
120
11
0
-
60
1
0.5 < . < 62.5
0.67 < . < 83
96 (256 - reload
value Timer 1)
(reload value range:
0-254 in mode 2)
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