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参数资料
| 型号： | PIC12F629T-I/MD |
| 厂商： | Microchip Technology |
| 文件页数： | 34/35页 |
| 文件大小： | 0K |
| 描述： | IC PIC MCU FLASH 1KX14 8DFN |
| 产品培训模块： | Asynchronous Stimulus |
| 标准包装： | 3,300 |
| 系列： | PIC® 12F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 外围设备： | POR，WDT |
| 输入/输出数： | 5 |
| 程序存储器容量： | 1.75KB（1K x 14） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 128 x 8 |
| RAM 容量： | 64 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-VDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 配用： | AC164326-ND - MODULA SKT PM3 20QFN |
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8
0787E–MICRO–3/06
AT89S53
Table 4. SPCR—SPI Control Register
SPCR Address = D5H
Reset Value = 0000 01XXB
SPIE
SPE
DORD
MSTR
CPOL
CPHA
SPR1
SPR0
Bit
7
6
5
4
3
2
1
0
Symbol
Function
SPIE
SPI Interrupt Enable. This bit, in conjunction with the ES bit in the IE register, enables SPI interrupts: SPIE = 1 and ES
= 1 enable SPI interrupts. SPIE = 0 disables SPI interrupts.
SPE
SPI Enable. SPI = 1 enables the SPI channel and connects SS, MOSI, MISO and SCK to pins P1.4, P1.5, P1.6, and
P1.7. SPI = 0 disables the SPI channel.
DORD
Data Order. DORD = 1 selects LSB first data transmission. DORD = 0 selects MSB first data transmission.
MSTR
Master/Slave Select. MSTR = 1 selects Master SPI mode. MSTR = 0 selects Slave SPI mode.
CPOL
Clock Polarity. When CPOL = 1, SCK is high when idle. When CPOL = 0, SCK of the master device is low when not
transmitting. Please refer to figure on SPI Clock Phase and Polarity Control.
CPHA
Clock Phase. The CPHA bit together with the CPOL bit controls the clock and data relationship between master and
slave. Please refer to figure on SPI Clock Phase and Polarity Control.
SPR0
SPR1
SPI Clock Rate Select. These two bits control the SCK rate of the device configured as master. SPR1 and SPR0 have
no effect on the slave. The relationship between SCK and the oscillator frequency, F
OSC., is as follows:
SPR1SPR0SCK = F
OSC. divided by
004
01 16
10 64
1
1 128
Table 5. SPSR—SPI Status Register Data Memory - RAM
SPSR Address = AAH
Reset Value = 00XX XXXXB
SPIF
WCOL
–
Bit
7
6
5
4
3
2
1
0
Symbol
Function
SPIF
SPI Interrupt Flag. When a serial transfer is complete, the SPIF bit is set and an interrupt is generated if SPIE = 1 and
ES = 1. The SPIF bit is cleared by reading the SPI status register with SPIF and WCOL bits set, and then accessing
the SPI data register.
WCOL
Write Collision Flag. The WCOL bit is set if the SPI data register is written during a data transfer. During data transfer,
the result of reading the SPDR register may be incorrect, and writing to it has no effect. The WCOL bit (and the SPIF
bit) are cleared by reading the SPI status register with SPIF and WCOL set, and then accessing the SPI data register.
Table 6. SPDR—SPI Data Register
SPDR Address = 86H
Reset Value = unchanged
SPD7
SPD6
SPD5
SPD4
SPD3
SPD2
SPD1
SPD0
Bit
7
6
5
4
3
2
1
0
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