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參數(shù)資料
| 型號(hào)： | PC87782 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 114K |
| 代理商： | PC87782 |
3
www.national.com
Device Overview
The PC87782 is a microcontroller with all system interfaces,
interrupt logic, program memory, data memory, and I/O ports
included on-chip, making it well-suited to PC monitoring ap-
plications. The block diagram on the page 1 of the data sheet
shows the major on-chip components of the PC87782. Fig-
ure 1 shows a connection diagram of the PC87782 to the PC
system.
Figure 1. PC87782 Stand-Alone System Connection
or
CLOCK
PC87782
H
3
3
HMR
HPWRON
HA
HD0-7
HIOR
HIOW
PB5-7
PC1-7
CRYSTAL
32.768 kHz
E
AV
CC
, AGND, Vref
V
CC
(4)
GND (4)
POWER
SUPPLY
System
Management
Bus (SMB)
HCSA
HCSB
E
Configuration
Inputs
(All pulled high for
normal operation)
PC0
FAN3
FAN2
FAN1
C
PI 2-7
Analog Inputs (6)
PI 0
AMP0
PI 1
AMP1
-12V Monitor
and Feedback
-5V Monitor
and Feedback
SCL
SDA
PB0-4
VID Inputs
General-Purpose
Input/Output Pins
PL0-7
(MIWU)
CHASSIS
RING
Other(6): BTI,
SWIN, etc.
SOFT_ON
RX_CLK
RX_DV
RX_ER
RXD0-3
TXD0-3
TX_CLK
TX_EN
COL
CRS
MAC_ISOL
E
Fan Inputs
PFAIL
NTEST
NAND Test
Output
Power Fail
Interrupt (NMI)
IRQA
IRQB
RESET
Chip Reset
PC3
PF0
PF1
PF2
PF3
PF4
PF5
PF6
PF7
IN0
IN1
OUT0
OUT1
LOSTPKT
Receive
Buffer Mgmt.
Status
H
N
A
H
H
O
DAOUT
Analog Output
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