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P89LPC938FHN

更新时间： 2024-02-20 17:54:59

品牌	Logo	应用领域
恩智浦 - NXP		转换器闪存微控制器时钟
页数	文件大小	规格书
68页	306K
描述
8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable Flash with 10-bit A/D converter

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P89LPC938FHN 数据手册

P89LPC938

Philips Semiconductors

8-bit microcontroller with 10-bit A/D converter

2.2 Additional features

■ A high performance 80C51 CPU provides instruction cycle times of 111 ns to 222 ns

for all instructions except multiply and divide when executing at 18 MHz. This is six

times the performance of the standard 80C51 running at the same clock frequency. A

lower clock frequency for the same performance results in power savings and reduced

EMI.

■ Serial Flash ICP allows simple production coding with commercial EPROM

programmers. Flash security bits prevent reading of sensitive application programs.

■ Serial Flash ISP allows coding while the device is mounted in the end application.

■ In-Application Programming of the Flash code memory. This allows changing the code

in a running application.

■ Watchdog timer with separate on-chip oscillator, requiring no external components.

The watchdog prescaler is selectable from eight values.

■ Low voltage reset (brownout detect) allows a graceful system shutdown when power

fails. May optionally be conﬁgured as an interrupt.

■ Idle and two different power-down reduced power modes. Improved wake-up from

Power-down mode (a LOW interrupt input starts execution). Typical power-down

current is 1 µA (total power-down with voltage comparators disabled).

■ Active-LOW reset. On-chip power-on reset allows operation without external reset

components. A reset counter and reset glitch suppression circuitry prevent spurious

and incomplete resets. A software reset function is also available.

■ Conﬁgurable on-chip oscillator with frequency range options selected by user

programmed Flash conﬁguration bits. Oscillator options support frequencies from

20 kHz to the maximum operating frequency of 18 MHz.

■ Oscillator fail detect. The watchdog timer has a separate fully on-chip oscillator

allowing it to perform an oscillator fail detect function.

■ Programmable port output conﬁguration options: quasi-bidirectional, open drain,

push-pull, input-only.

■ Port ‘input pattern match’ detect. Port 0 may generate an interrupt when the value of

the pins match or do not match a programmable pattern.

■ LED drive capability (20 mA) on all port pins. A maximum limit is speciﬁed for the

entire chip.

■ Controlled slew rate port outputs to reduce EMI. Outputs have approximately 10 ns

minimum ramp times.

■ Only power and ground connections are required to operate the P89LPC938 when

internal reset option is selected.

■ Four interrupt priority levels.

■ Eight keypad interrupt inputs, plus two additional external interrupt inputs.

■ Schmitt trigger port inputs.

■ Second data pointer.

■ Emulation support.

9397 750 14051

Product data sheet

Rev. 01 — 25 February 2005

2 of 68

123 4 5 6 7...68

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与P89LPC938FHN相关器件

型号	品牌	描述	获取价格	数据表
P89LPC938FHN,151	NXP	P89LPC938 - 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-eras	获取价格
P89LPC9401	NXP	8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash w	获取价格
P89LPC9401FBD	NXP	8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash w	获取价格
P89LPC9401FBD,551	NXP	P89LPC9401 - 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-era	获取价格
P89LPC9401FBD,557	NXP	P89LPC9401 - 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-era	获取价格
P89LPC9402	NXP	8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash w	获取价格

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