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參數資料
| 型號： | TSC80251G2D-16CB |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8/16-bit Microcontroller with Serial Communication Interfaces |
| 中文描述： | 16位產品微控制器的串行通信接口 |
| 文件頁數： | 14/63頁 |
| 文件大?。?/td> | 878K |
| 代理商： | TSC80251G2D-16CB |
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14
Rev. A - May 7, 1999
TSC80251G2D
6.4 Configuration Bytes
The TSC80251G2D derivatives provide user design flexibility by configuring certain operating features at device
reset. These features fall into the following categories:
external memory interface (Page mode, address bits, programmed wait states and the address range for RD#,
WR#, and PSEN#)
source mode/binary mode opcodes
selection of bytes stored on the stack by an interrupt
mapping of the upper portion of on-chip code memory to region 00:
Two user configuration bytes UCONFIG0 (see Figure 7) and UCONFIG1 (see Figure 8) provide the information.
When EA# is tied to a low level, the configuration bytes are fetched from the external address space. The
TSC80251G2D derivatives reserve the top eight bytes of the memory address space (FF:FFF8h-FF:FFFFh) for an
external 8-byte configuration array. Only two bytes are actually used: UCONFIG0 at FF:FFF8h and UCONFIG1
at FF:FFF9h.
For the mask ROM devices, configuration information is stored in on-chip memory (see ROM Verifying). When
EA# is tied to a high level, the configuration information is retrieved from the on-chip memory instead of the
external address space and there is no restriction in the usage of the external memory.
UCONFIG0
Configuration Byte 0
Notes:
1. UCONFIG0 is fetched twice so it can be properly read both in Page or Non-Page modes. If P2.1 is cleared during the first data fetch, a
Page mode configuration is used, otherwise the subsequent fetches are performed in Non-Page mode.
2. This selection provides compatibility with the standard 80C51 hardware which is multiplexing the address LSB and the data on Port 0.
Figure 7. Configuration Byte 0
7
6
5
4
3
2
1
0
-
WSA1#
WSA0#
XALE#
RD1
RD0
PAGE#
SRC
Bit Number
Bit Mnemonic
Description
7
-
Reserved
Set this bit when writing to UCONFIG0.
6
WSA1#
Wait State A bits
Select the number of wait states for RD#, WR# and PSEN# signals for external memory accesses
(all regions except 01:).
WSA1#
WSA0#
Number of Wait States
0
0
3
0
1
2
1
0
1
1
1
0
5
WSA0#
4
XALE#
Extend ALE bit
Clear to extend the duration of the ALE pulse from T
OSC
to 3·T
OSC.
Set to minimize the duration of the ALE pulse to 1·T
OSC
.
3
RD1
Memory Signal Select bits
Specify a 18-bit, 17-bit or 16-bit external address bus and the usage of RD#, WR# and PSEN#
signals (see Table 13).
Page Mode Select bit
(1)
Clear to select the faster Page mode with A15:8/D7:0 on Port 2 and A7:0 on Port 0.
Set to select the non-Page mode
(2)
with A15:8 on Port 2 and A7:0/D7:0 on Port 0.
2
RD0
1
PAGE#
0
SRC
Source Mode/Binary Mode Select bit
Clear to select the binary mode.
Set to select the source mode.
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| TSC80251G2D-16CBR | 功能描述:IC MCU 8BIT 16MHZ HI SPD 44-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:8x251 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數:16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 11x10b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TSC80251G2D-24CB | 功能描述:IC C251 MCU ROMLESS 5V 44PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:8x251 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數:16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 11x10b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TSC80251G2D-24CBR | 制造商:Atmel Corporation 功能描述:MCU 8-bit/16-bit 8x251 C251 CISC ROMLess 3.3V/5V 44-Pin PLCC |
| TSC80251G2D-24CE | 功能描述:IC C251 MCU ROMLESS 5V 44VQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:8x251 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數:16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 11x10b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TSC80251G2D-24CED | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8/16-bit Microcontroller with Serial Communication Interfaces |
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