参数资料
型号: SMS64FR06
厂商: Summit Microelectronics, Inc.
英文描述: Six-Channel Supply Monitor and Sequencing Controller
中文描述: 6通道电源监视器和排序控制器
文件页数: 15/24页
文件大小: 647K
代理商: SMS64FR06
SMS64
APPLICATIONS INFORMATION (CONTINUED)
Preliminary
Summit Microelectronics, Inc
2060 2.22 10/09/03
15
COMMAND REGISTER
The command register (slave address 1001
[BIN]
register address 0F
[HEX]
) contains 4 bits used for
software control of several functions in the SMS64
(see Figure 7). Each of these functions is activated by
writing a 1 to the function’s bit in the command register
(listed below). Only one command can be issued at a
time; therefore, only data bytes 80
[HEX]
, 40
[HEX]
, 20
[HEX]
,
10
[HEX]
and 00
[HEX]
should be written to the command
register. The command register is volatile and will be
cleared when power is removed.
Bit 7 is the power-on bit. When active it will initiate a
power-on sequence.
Bit 6 is the power-off bit. When active it will initiate a
power-off sequence.
Bit 5 is OR’ed with the FS# pin. When active it will
turn off all PUP outputs.
Bit 4 is OR’ed with the WLDI pin. When active it will
clear both the Longdog and Watchdog timers and
block interrupts.
FAULT and STATUS REGISTERS
The fault and status registers (see Figure 7) are
volatile registers which reflect the conditions of the VM
inputs. In either register a fault condition (under-
voltage or over-voltage) is represented as a “1”.
The Fault register (located at register address 0D
[HEX]
) latches the state of the VM inputs when an IRQ#
is generated.
The Status register (located at register address 0E
[HEX]
) reflects the current state of the VM inputs.
CONFIGURATION REGISTERS
The SMS64 has 24 configuration registers that
allow programming voltage thresholds, timer values,
sequencing order and output configurations. All of
these registers are accessible over the I
C serial
interface.
For prototyping purposes, Summit can provide a
programming cable (SMX3200) that interfaces a PC
parallel port to the serial interface of the SMS64 (see
the ‘Development Hardware and Software’ section).
Summit provides software that can be downloaded
from its website without charge. The software
provides
an
intuitive
graphical
comprised of drop-down menus that make selecting
options straightforward, thereby eliminating the need
to understand the register configurations in detail.
user
interface
MEMORY ARRAY
The SMS64 has 4-K bits of nonvolatile memory
that is accessible over the 2-wire serial interface. This
memory can be used in a dynamic manner by the host
processor or it could be used to store board
configuration information or board identification
information. The slave address used to access the
memory can be configured as 1010
[BIN]
or 1011
[BIN].
The memory array can be read whenever chip
select is enabled (CS# low). In order to prevent
inadvertent writes, memory writes are blocked when
either RST_A# or RST_B# are active. Therefore, the
memory can only be written after the device has
performed a power-on operation, the reset outputs
(RST_A# and RST_B#) have timed out and before the
device has been issued a force shutdown or power-off
command. MR# must also be high.
7
6
5
4
3
2
1
0
Command Register
1 = FS
1 = PWR_DOWN
1 = PWR_UP
1 = WLDI
UV/OV
A
UV/OV
B
UV/OV
C
UV/OV
D
UV/OV
E
UV/OV
F
5
4
3
2
1
0
Fault & Status Register
Figure 7 – Command and Status Registers
相关PDF资料
PDF描述
SMS64FR07 Six-Channel Supply Monitor and Sequencing Controller
SMS64FR08 Six-Channel Supply Monitor and Sequencing Controller
SMS66 Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0C Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0D Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
相关代理商/技术参数
参数描述
SMS64FR07 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Supply Monitor and Sequencing Controller
SMS64FR08 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Supply Monitor and Sequencing Controller
SMS66 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0C 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
SMS66FR0D 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Six-Channel Power Supply Supervisor and Cacsade Sequence Controller