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参数资料
| 型号： | MB90246A |
| 厂商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器专有 |
| 文件页数： | 15/100页 |
| 文件大小： | 1956K |
| 代理商： | MB90246A |
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15
MB90246A Series
6. Turning-on Sequence of Power Supply to A/D Converter, D/A Converter and Analog Inputs
Make sure to turn on the A/D converter power supply (AV
CC
, AVRH, AVRL), D/A converter power supply and
analog inputs (AN0 to AN7) after turning-on the digital power supply (V
CC
).
Turn-off the digital power after turning off the A/D converter supply and analog inputs. In this case, make sure
that the voltage not exceed AVRH or AV
CC
(turning on/off the analog and digital supplies simultaneously is
acceptable).
7. Connection of Unused Pins of A/D Converter
Connect unused pins of A/D converter to AV
CC
= V
CC
, AV
SS
= AVRH = AVRL = V
SS
.
8. “MOV @AL, AH”, “MOVW @AL, AH” Instructions
When the above instruction is performed to I/O space, an unnecessary writing operation may be performed
(#FF, #FFFF) in the internal bus.
Use the compiler function for inserting an NOP instruction before the above instructions to avoid the writing
operation.
Accessing RAM space with the above instruction does not cause any problem.
9. Initialization
In the device, there are internal registers which is initialized only by a power-on reset. To initialize these registers
turning on the power again.
10.External Reset Input
To reset the internal securely, “L” level input to the RST pin must be at least 5 machine cycle.
11.HST Pin
Make sure HST pin is set to “H” level when turn on the power supply. Also make sure HST pin is never set to
“L” level, when RST pin is set to “L” level.
12.CLK Pin
a case 32 MHz
X1
X0
P50/CLK*
STOP
CLK output
P50 output
P50 input
2 deviding circuit
To the inside
*: At P50/CLK pin in the external bus mode, CLK output is selected as an initial value.
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|---|---|
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MB90246APFV | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90330 | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90330A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Microcontroller |
| MB90330A_9E | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit microcontrollers |
| MB90333A | 制造商:FUJITSU 制造商全称:Fujitsu Component Limited. 功能描述:16-bit Microcontroller |
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