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参数资料
| 型号： | SAF-C504-2R24M |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | METRIC, PLASTIC, QFP-44 |
| 文件页数： | 4/71页 |
| 文件大小： | 1231K |
| 代理商： | SAF-C504-2R24M |
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C504
Data Sheet
8
2000-05
PSEN
26
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 periods
except during external data memory accesses.
Remains high during internal program execution.
ALE
27
O
The Address Latch Enable
output is used for latching the low-byte of the
address into external memory during normal
operation. It is activated every six oscillator periods
except during an external data memory access.
When instructions are executed from internal ROM
(EA = 1) the ALE generation can be disabled by
clearing bit EALE in SFR SYSCON.
COUT3
28
O
10-Bit compare channel output
This pin is used for the output signal of the 10-bit
Compare Timer 2 unit. COUT3 can be disabled and
set to a high or low state.
EA
29
I
External Access Enable
When held at high level, instructions are fetched
from the internal ROM (C504-2R only) when the PC
is less than 4000H. When held at low level, the C504
fetches all instructions from external program
memory.
For the C504-L, this pin must be tied low.
P0.0 - P0.7 37 - 30
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
pullup resistors when issuing “1” s.
Port 0 also outputs the code bytes during program
verification in the C504-2R. External pullup resistors
are required during program (ROM) verification.
V
AREF
38
–
Reference voltage for the A/D converter.
Table 1
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
(P-MQFP-44)
I/O
1)
Function
相关PDF资料 |
PDF描述 |
|---|---|
| SAF-C513AO-2EM | 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP44 |
| SAF-C868A-1SRBA | 8-BIT, 40 MHz, MICROCONTROLLER, PDSO38 |
| SAK-C868P-1SRBA | 8-BIT, 40 MHz, MICROCONTROLLER, PDSO38 |
| SAF-C868A-1RGBA | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDSO28 |
| SAF-C868A-1RRBA | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDSO38 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SAFC505 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-bit CMOS Microcontroller |
| SAF-C505 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C505-2RM | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C505A-4EM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAFC505A4EM-CA | 制造商:Infineon Technologies AG 功能描述:MCU 8-bit C500 8051 CISC 32KB EPROM 5V 44-Pin MQFP Ammo |
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