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参数资料
| 型号： | HT83C51 |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH TEMPERATURE 83C51 MICROCONTROLLER |
| 中文描述： | 高温83C51单片机 |
| 文件页数： | 11/12页 |
| 文件大小： | 89K |
| 代理商： | HT83C51 |
11
HT83C51
PINOUT DIAGRAM
Vdd
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EAn
ALE
PSENn
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P2.4 (A12)
P2.3 (A11)
P2.2 (A10)
P2.1 (A9)
P2.0 (A8)
(T2) P1.0
(T2EX) P1.1
(ECI) P1.2
(CEXO) P1.3
(CEX1) P1.4
(CEX2) P1.5
(CEX3) P1.6
(CEX4) P1.7
RST
(RXD) P3.0
(TXD) P3.1
(INT0n) P3.2
(INT1n) P3.3
(T0) P3.4
(T1) P3.5
(WRn) P3.6
(RDn) P3.7
XTAL2
XTAL1
Vss
HT51
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DIFFERENCES BETWEEN
INTEL 8XC51FC AND HT83C51
There are a few areas in which the HT51 differs from the
8XC51FC. These differences will be covered in this
appendix. In this discussion, 8XC51FC will be used
generically to refer to all speed grades of the Intel 8XC51FC
family, including the 16MHz 8XC51FC-1.
1. Reset
The 8XC51FC requires the RST input to be held high for at
least 24 oscillator periods to guarantee the reset is completed
in the chip. Also, the port pins are reset asynchronously as
soon as the RST pin is pulled high. On the HT51, all portions
of the chip are reset synchronously when the RST pin has
been high during 2 rising edges of the input clock.
When coming out of reset, the 8XC51FC takes 1 to 2
machine cycles to begin driving ALE and PSENn. The
HT51 will begin driving ALE and PSENn 2 oscillator periods
after the RST is removed but the access during the first
machine cycle after reset is ignored by the processor. The
second cycle will repeat the access and processing will
begin.
2. Power Off Flag
The Power Off Flag in the PCON register has not been
implemented in the HT51.
3. On Circuit Emulation
The On Circuit Emulation mode of operation in the 8XC51FC
has not been implemented in the HT51.
`4. Operating Conditions
The operating voltage range for the 8XC51FC is 5V
±
20%.
The operating temperature range is 0
°
to 70
°
C. On the
HT51, the operating voltage range is 5V
±
10%. The full
speed operating temperature range is -55
°
to +225
°
C;
typically, parts will operate up to +300
°
C for a year, with
derated performance.
5. DC Characteristics
VIL min for the 8XC51FC is -0.5V for all inputs except EAn
which has a VIL min of 0V. The HT51 has a VIL min for all
inputs of Vss-0.3V.
6. Internal Program Memory
The 8XC51FC contains 32 Kbytes of internal program
ROM (83C51FC) or EPROM (87C51FC). The HT51
contains 8 Kbytes of internal program ROM.
7. Serial Communications
There is a chance the part will miss hardware interrupts
when performing full-duplex (simultaneous send and
receive) communication or when using the capture or
compare modes in the Programmable Counter Array (PCA).
As a result, the HT83C51 supports half-duplex operation.
Full duplex operation is not supported without additional
external hardware. Several acceptable work-around pro-
cedures have been identified for the problem associated
with the PCA.
PROGRAMMING THE MASK ROM
The HT83C51 has 8K bytes of on-chip mask program-
mable ROM. The part is usable with or without this memory
space personalised. Once the designer’s code has been
finalized, the ROM information can be transmitted to Hon-
eywell for metal programming of these memory locations.
A non-recurring fee is required to personalize the ROM and
a quantity purchase commitment fulfilled.
相关PDF资料 |
PDF描述 |
|---|---|
| HT83C51DB | HIGH TEMPERATURE 83C51 MICROCONTROLLER |
| HT83C51DC | RY Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 09V; Output Voltage (Vdc): 12V; Power: 1W; On/Off Pin; 1kVDC Isolation; UL94V-0 Package Material; Optional Continuous Short Circuit Protected; Internal linear regulator; Efficiency to 70% |
| HT84003 | Speech Synthesizer |
| HT84006 | Speech Synthesizer |
| HT84009 | Speech Synthesizer |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HT83C51DB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:HIGH TEMPERATURE 83C51 MICROCONTROLLER |
| HT83C51DC | 制造商:HONEYWELL 制造商全称:Honeywell Solid State Electronics Center 功能描述:HIGH TEMPERATURE 83C51 MICROCONTROLLER |
| HT83C51DS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| HT83F02 | 制造商:HOLTEK 制造商全称:Holtek Semiconductor Inc 功能描述:External Voice Memory Flash MCU |
| HT83F10 | 制造商:HOLTEK 制造商全称:Holtek Semiconductor Inc 功能描述:Flash Type Voice OTP MCU |
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