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參數(shù)資料
| 型號(hào)： | MAX7651 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Flash Programmable 12-Bit Integrated Data-Acquisition Systems |
| 中文描述： | 閃存、可編程、12位、集成數(shù)據(jù)采集系統(tǒng) |
| 文件頁數(shù)： | 31/36頁 |
| 文件大?。?/td> | 479K |
| 代理商： | MAX7651 |
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M
Flash Programmable 12-Bit Integrated
Data-Acquisition Systems
______________________________________________________________________________________
31
Interrupt System
The MAX7651/MAX7652 has ten program-assist inter-
rupts that are either external or internal to the 8051 sys-
tem. Table 24 shows the SFR bit locations for interrupt
enable and priority control. Shaded Table regions
reflect the 8051 industry standard. Set SFR bit IE.7 high
to enable all interrupts. See the MAX7651/MAX7652
Programmer
’
s Reference Manual
.
Timers
The MAX7651/MAX7652 feature several modes of tim-
ing control through the CKCON special function regis-
ter. Table 25 shows the CKCON SFR format. The
individual control bits can be used to set the number of
clock cycles needed (four or twelve) to increment each
timer/counter or the number of clock cycles needed to
execute the MOVX instruction. See the MAX7651/
MAX7652
Programmer
’
s Reference Manual
for further
details.
Analog and Digital Supplies
The MAX7651/MAX7652 have multiple power-supply
inputs: one analog AV
DD
and three digital DV
DD
. The
pulse width modulators have their own power supply
inputs, PWMV and PWMG. Decouple all supply inputs
with a 0.1μF capacitor in parallel with a 10μF low ESR
capacitor, with both capacitors as close to the supply
pins as possible and with the shortest possible connec-
tion to the ground plane.
PARAMETER
T
PROGL
T
ASUW
T
WRITE
T
ADSUR
T
READ
T
P27L
T
P27H
T
CK
MIN
10T
CK
3T
CK
7T
CK
+ 54
μ
s
3T
CK
MAX
COMMENTS
T
PROGL
must equal T
WRITE
during lockbit writes
7T
CK
+ 72
μ
s
8T
CK
+ 50ns
Read access time
10T
CK
3T
CK
83ns
250ns
Table 23
Note:
P2.6, P2.7, P3.6, and P3.7 must also meet T
ASUW
(min) timing specification.
PROGRAM LOCK
BITS
LB1
1
LB2
1
LB3
1
PROTECTION TYPE
1
No program lock features (Default after a mass erase)
2
0
1
1
MOVC instructions executed from external program memory are disabled from fetching code bytes
from internal memory,
EA
is sampled and latched on reset (RST), and further external data
programming of both FLASH arrays is disabled.
3
4
0
0
0
0
1
0
Verify (read) is disabled. (see Mode 2)
External execution is disabled (
EA
override, see Mode 3).
Table 24. Lock Bit Protection Modes
ADDRESS
30H
31H
32H
DATA
7FH
CBH
20H
MEANING
JEDEC Continuation Byte
Manufactured by Maxim
MAX7651/MAX7652
Table 25. MAX7651/MAX7652 Signature Bits
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX7651CCB | Flash Programmable 12-Bit Integrated Data-Acquisition Systems |
| MAX7651ECB | Flash Programmable 12-Bit Integrated Data-Acquisition Systems |
| MAX7652CCB | Flash Programmable 12-Bit Integrated Data-Acquisition Systems |
| MAX7652ECB | Flash Programmable 12-Bit Integrated Data-Acquisition Systems |
| MAX766ESA | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7651CCB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX7651ECB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX7651EVKIT | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX7652CCB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX7652ECB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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