參數(shù)資料
型號: AT90S2313-10PC
廠商: Atmel
文件頁數(shù): 87/92頁
文件大小: 0K
描述: IC MCU 2K FLSH 10MHZ UART 20DIP
標準包裝: 18
系列: AVR® 90S
核心處理器: AVR
芯體尺寸: 8-位
速度: 10MHz
連通性: SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 15
程序存儲器容量: 2KB(1K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 128 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
PIC16C6X
DS30234D-page 88
1997 Microchip Technology Inc.
The SS pin allows a synchronous slave mode. The
SPI must be in slave mode (SSPCON<3:0> = 04h)
and the TRISA<5> bit must be set the for synchro-
nous slave mode to be enabled. When the SS pin is
low, transmission and reception are enabled and
the SDO pin is driven. When the SS pin goes high,
the SDO pin is no longer driven, even if in the mid-
dle of a transmitted byte, and becomes a oating
output. If the SS pin is taken low without resetting
SPI mode, the transmission will continue from the
point at which it was taken high. External pull-up/
pull-down resistors may be desirable, depending on the
application.
To emulate two-wire communication, the SDO pin can
be connected to the SDI pin. When the SPI needs to
operate as a receiver the SDO pin can be congured as
an input. This disables transmissions from the SDO.
The SDI can always be left as an input (SDI function)
since it cannot create a bus conict.
FIGURE 11-5: SPI MODE TIMING, MASTER MODE OR SLAVE MODE W/O SS CONTROL
FIGURE 11-6: SPI MODE TIMING, SLAVE MODE WITH SS CONTROL
TABLE 11-1:
REGISTERS ASSOCIATED WITH SPI OPERATION
Address Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR,
BOR
Value on
all other
Resets
0Bh,8Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
0000 000u
0Ch
PIR1
PSPIF(2)
(3)
RCIF(1)
TXIF(1)
SSPIF
CCP1IF
TMR2IF
TMR1IF 0000 0000
0000 0000
8Ch
PIE1
PSPIE(2)
(3)
RCIE(1)
TXIE(1)
SSPIE
CCP1IE TMR2IE TMR1IE 0000 0000
0000 0000
13h
SSPBUF
Synchronous Serial Port Receive Buffer/Transmit Register
xxxx xxxx
uuuu uuuu
14h
SSPCON
WCOL
SSPOV
SSPEN
CKP
SSPM3
SSPM2
SSPM1
SSPM0 0000 0000
0000 0000
85h
TRISA
PORTA Data Direction Register
--11 1111
87h
TRISC
PORTC Data Direction Register
1111 1111
94h
SSPSTAT
D/A
P
S
R/W
UA
BF
--00 0000
Legend: x = unknown, u = unchanged, - = unimplemented locations read as '0'. Shaded cells are not used by SSP module in SPI
mode.
Note 1:
These bits are associated with the USART which is implemented on the PIC16C63/R63/65/65A/R65 only.
2:
PSPIF and PSPIE are reserved on the PIC16C62/62A/R62/63/R63, always maintain these bits clear.
3:
PIR1<6> and PIE1<6> are reserved, always maintain these bits clear.
SCK
(CKP = 0)
SCK
(CKP = 1)
SDO
SDI
SSPIF
bit7
bit0
bit6
bit5
bit4
bit3
bit2
bit1
bit0
SCK
(CKP = 0)
SCK
(CKP = 1)
SDO
SDI
SSPIF
bit7
bit0
bit6
bit5
bit4
bit3
bit2
bit1
bit0
SS
Applicable Devices
61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67
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