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| 型號： | PXAS37KFA512 |
| 英文描述： | IC-SM-16-BIT MCU |
| 中文描述： | 集成電路釤16位MCU |
| 文件頁數(shù)： | 48/51頁 |
| 文件大?。?/td> | 405K |
| 代理商： | PXAS37KFA512 |
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Philips Semiconductors
XA 16-bit microcontroller
32K/1K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage (2.7 V–5.5 V),
I
2
C, 2 UARTs, 16 MB address range
Preliminary specification
XA-S3
2000 Mar 09
48
EPROM CHARACTERISTICS
The XA-S3 is programmed by using a modified Improved
Quick-Pulse Programming
algorithm. This algorithm is essentially
the same as that used by 80C51 family EPROM parts. However
different pins are used for many programming functions.
Detailed EPROM programming information may be obtained from
the Internet at www.philipsmcu.com/ftp.html.
The XA-S3 contains three signature bytes that can be read and
used by an EPROM programming system to identify the device. The
signature bytes identify the device as an XA-S3 manufactured by
Philips.
Security Bits
With none of the security bits programmed the code in the program
memory can be verified. When only security bit 1 is programmed,
MOVC instructions executed from external program memory are
disabled from fetching code bytes from the internal memory. All
further programming of the EPROM is disabled. When security bits
1 and 2 are programmed, in addition to the above, verify mode is
disabled. When all three security bits are programmed, all of the
conditions above apply and all external program memory execution
is disabled. (See Table 6.)
Table 6. Program Security Bits
PROGRAM LOCK BITS
SB1
SB2
SB3
PROTECTION DESCRIPTION
1
U
U
U
No Program Security features enabled.
2
P
U
U
MOVC instructions executed from external program memory are disabled from fetching code bytes
from internal memory and further programming of the EPROM is disabled.
3
P
P
U
Same as 2, also verify is disabled.
4
P
P
P
Same as 3, external execution is disabled. Internal data RAM is not accessible.
NOTES:
1. P – programmed. U – unprogrammed.
2. Any other combination of the security bits is not defined.
ROM CODE SUBMISSION
When submitting ROM code for the XA-S3, the following must be specified:
1. 32k byte user ROM data
2. ROM security bits.
ADDRESS
CONTENT
BIT(S)
COMMENT
0000H to 7FFFH
DATA
7:0
User ROM Data
8020H
SEC
0
ROM Security Bit 1
8020H
SEC
1
ROM Security Bit 2
0 = enable security
1 = disable security
8020H
SEC
3
ROM Security Bit 3
0 = enable security
1 = disable security
Trademark phrase of Intel Corporation.
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| PXAS37KFBE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range |
| PXAS83XFA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XA 16-bit microcontroller 32K/1K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16MB address range |
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| PXASCCKFBE | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS 16-bit communications microcontroller |
| PXB 4210 EL V1.2-G | 制造商:Lantiq 功能描述:LTQPXB 4210 EL V1.2-G LQ000001141_GRX288 |
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