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参数资料
| 型号： | SAB80C517-N-T85 |
| 厂商： | SIEMENS A G |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC84 |
| 封装： | PLASTIC, LCC-84 |
| 文件页数： | 4/61页 |
| 文件大小： | 1054K |
| 代理商： | SAB80C517-N-T85 |
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SAB 80C517/80C537
Semiconductor Group
11
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
I/O *) Function
P-LCC-84
P-MQFP-100-2
PSEN
49
22
O
The Program Store Enable
output is a control signal that enables
the external program memory to the
bus during external fetch operations. It
is activated every six oscillator periodes
except during external data memory
accesses. Remains high during internal
pro-gram execution.
ALE
50
23
O
The Address Latch Enable
output is used for latching the address
into external memory during normal
operation. It is activated every six
oscillator periodes except during an
external data memory access
EA
51
24
I
External Access Enable
When held at high level, instructions
are fetched from the internal ROM
when the PC is less than 8192. When
held at low level, the SAB 80C517
fetches all instructions from external
program memory. For the SAB 80C537
this pin must be tied low
P0.0 - P0.7
52 - 59
26 - 27,
30 - 35
I/O
Port 0
is an 8-bit open-drain bidirectional I/O
port. Port 0 pins that have 1 s written to
them float, and in that state can be
used as high-impedance inputs. Port 0
is also the multiplexed low-order
address and data bus during accesses
to external program or data memory. In
this application it uses strong internal
pull-up resistors when issuing 1 s.
Port 0 also outputs the code bytes
during program verification in the
SAB 83C517. External pull-up resistors
are required during program
verification.
* I = Input
O = Output
相关PDF资料 |
PDF描述 |
|---|---|
| SAB80C517-M-T40 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C517-M-T40 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C517-M-T85 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C537-N-T40 | 8-BIT, 12 MHz, MICROCONTROLLER, PQCC84 |
| SAB80C517-N16-T85 | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC84 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SAB80C52 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:High-Performance 8-Bit Single Chip Microcontroller |
| SAB80C52-16-N | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:High-Performance 8-Bit Single Chip Microcontroller |
| SAB80C52-16-P | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:High-Performance 8-Bit Single Chip Microcontroller |
| SAB80C52-16-P-T40/85 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:High-Performance 8-Bit Single Chip Microcontroller |
| SAB80C52-20 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:High-Performance 8-Bit Single Chip Microcontroller |
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