参数资料
| 型号： | PIC16F84-04/P |
| 厂商： | Microchip Technology |
| 文件页数： | 58/80页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 1KX14 EE 18DIP |
| 产品培训模块： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 标准包装： | 25 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 4MHz |
| 外围设备： | POR，WDT |
| 输入/输出数： | 13 |
| 程序存储器容量： | 1.75KB（1K x 14） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 64 x 8 |
| RAM 容量： | 68 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 6 V |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 18-DIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 配用： | DVA16XP180-ND - ADAPTER DEVICE FOR MPLAB-ICE AC164010-ND - MODULE SKT PROMATEII DIP/SOIC |
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Micrel, Inc.
KSZ8851SNL/SNLI
August 2009
61
M9999-083109-2.0
Bit
Default Value
R/W
Description
Bit 8: is corresponding to signal energy detected.
When the bit is set to 1, the PME pin 2 will be asserted when a corresponding wake-on-
LAN event is occurred.
When this bit is set to 0, the PME pin 2 will be not asserted when a corresponding wake-
on-LAN event is occurred.
7
0
RW
Auto Wake-Up Enable
This bit is used to enable automatically wake-up from low power state to normal power
state in energy detect mode if carrier (signal energy) is present more than wake-up time in
GSWUTR register. During the normal power state, the device can receive and transmit
packets.
When this bit is set to 1, the auto wake-up is enabled in energy detect mode.
When this bit is set to 0, the auto wake-up is disabled in energy detect mode.
6
0
RW
Wake-Up to Normal Operation Mode
This bit is used to control the device wake-up from low power state in energy detect mode
to normal operation mode if signal energy is detected longer than the programmed wake-
up time in GSWUTR register.
When this bit is set to 1, the device will automatically go to the normal operation mode
from energy detect mode.
When this bit is set to 0, the device will not automatically go to the normal mode from
energy detect mode.
This bit is only valid when Auto Wake-Up Enable (bit7) is set to 1.
5-2
0x0
RO
(W1C)
Wake-Up Event Indication
These four bits are used to indicate the KSZ8851SNL wake-up event status as below:
0000: No wake-up event.
0001: Wake-up from energy event detected. (Bit 2 also set to 1 in ISR register)
0010: Wake-up from link up event detected. (Bit 3 also set to 1 in ISR register)
0100: Wake-up from magic packet event detected.
1000: Wake-up from wakeup frame event detected.
If Wake-on-LAN to PME Output Enable bit[11:8] are set, the KSZ8851SNL also asserts
the PME pin 2. These bits are cleared on power up reset or by write 1. It is not modified
by either hardware or software reset. When these bits are cleared, the KSZ8851SNL de-
asserts the PME pin.
1-0
0x0
RW
Power Management Mode
These two bits are used to control the KSZ8851SNL power management mode as below:
00: Normal Operation Mode.
01: Energy Detect Mode. (two states in this mode either low power or normal power)
10: Soft Power Down Mode.
11: Power Saving Mode.
In energy detect mode under low power state, it can wake-up to normal operation mode
either from line or host wake-up (host CPU issues any one of registers read or write
access).
In soft power down mode, it can wake-up to normal operation mode only from host wake-
up (host CPU issues any one of registers read or write access).
Go-Sleep & Wake-Up Time Register (0xD6 – 0xD7): GSWUTR
This register contains the value which is used to control minimum Go-Sleep time period when the device from normal
power state to low power state or to control minimum Wake-Up time period when the device from low power state to
normal power state in energy detect mode.
Bit
Default
R/W
Description
15-8
0x08
RW
Wake-up Time
This value is used to control the minimum period that the energy has to be detected
consecutively before the device is waked-up from the low power state. The unit is 16ms
+/-80%, the default wake-up time is 128 ms (16ms x 8). Zero time (0x00) is not allowed
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