EM78P468N/EM78P468L

8-Bit Microcontroller

Table 2 (b) Pin Description for Package of QFP44 and LQFP44

 

Symbol

Pin No.

Type

Function

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1-bit General purpose input/output pin/external interrupt.

 

 

P5.4/INT0

21

I/O

The INT0 interrupt source can be set to falling or rising edge by

 

 

IOC71 register Bit 7 (INT_EDGE).

 

 

 

 

 

Wakes up from sleep mode and idle mode when the pin status

 

 

 

 

 

changes.

 

 

 

 

 

1-bit General purpose input/output pin/external interrupt.

 

 

P5.5/INT1

22

I/O

The Interrupt source is a falling edge signal.

 

 

Wakes up from sleep mode and idle mode when the pin status

 

 

 

 

 

 

 

 

 

 

changes.

 

 

P5.6/TCC

23

I/O

1-bit General purpose input/output pin/external counter input.

 

 

This pin works in normal/green/idle mode.

 

 

 

 

 

 

 

P5.7/IROUT

24

I/O

1-bit General purpose input/output pin/IR/PWM mode output pin

 

 

This pin is capable of sinking 20mA/5V.

 

 

 

 

 

 

 

 

 

 

8-bit General purpose input/output pins

 

 

P6.0~P6.7

25~32

I/O

Pull-high, pull-low and open drain function supported.

 

 

All pins can wake up from sleep and idle modes when the pin

 

 

 

 

 

 

 

 

 

 

status changes.

 

 

COM3~0

6~9

O

LCD common output pin.

 

 

SEG11~SEG14

5~2

O

LCD segment output pin.

 

 

SEG16/P7.0

1

 

 

 

 

SEG17/P7.1

44

O/(I/O)

LCD segment output pin.

 

 

~

~

Can be shared with general purpose I/O pin

 

 

 

 

 

SEG23/P7.7

38

 

 

 

 

SEG24/P8.0

37

 

LCD segment output pin. Can be shared with general I/O pin

 

 

 

For general purpose I/O use, can wake up from sleep mode and

 

 

~

~

O/(I/O)

 

 

idle mode when the pin status changes.

 

 

SEG31/P8.4

33

 

 

 

 

For general purposes I/O use, supports pull-high function.

 

 

 

 

 

 

 

VB

10

O

Connect capacitors for LCD bias voltage.

 

 

VA

11

O

Connect capacitors for LCD bias voltage.

 

 

VLCD2

12

O

One of LCD bias voltage.

 

 

VLCD3

13

O

One of LCD bias voltage.

 

 

/RESET

14

I

General-purpose Input only

 

 

Low active. If it remains at logic low, the device will be reset.

 

 

 

 

 

 

 

 

 

 

In Crystal mode: crystal input

 

 

R-OSCI

16

I

In RC mode: resistor pull high.

 

 

In PLL mode: connect 0.01μF capacitance to GND

 

 

 

 

 

Connect 0.01μF capacitor to GND and code option select PLL

 

 

 

 

 

mode when high oscillator is not use

 

 

OSCO

17

O

In Crystal mode: crystal input

 

 

In RC mode: instruction clock output

 

 

 

 

 

 

 

Xin

19

I

In Crystal mode: Input pin for sub-oscillator. Connect to a

 

 

32.768kHz crystal.

 

 

 

 

 

 

 

Xout

20

o

In Crystal mode: Connect to a 32.768kHz crystal.

 

 

In RC mode: instruction clock output

 

 

 

 

 

 

 

VDD

18

I

Power supply

 

 

GND

15

I

System ground pin

 

 

 

 

 

 

 

Product Specification (V1.5) 02.15.2007

• 5

(This specification is subject to change without further notice)

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IBM MiEM78P468N, MiEM78P468L manual Pin Description for Package of QFP44 and LQFP44, SEG11~SEG14
Page 10 Page 12

MiEM78P468L, MiEM78P468N specifications

The IBM MiEM78P468N and MiEM78P468L are advanced integrated circuit solutions that cater primarily to the needs of enterprise-level computing systems. These microprocessors are integral in handling a variety of complex tasks, thereby empowering businesses with the efficiency and speed required in today's fast-paced digital environment.

Both models utilize the cutting-edge 78P architecture, which provides impressive performance capabilities. The MiEM78P468N operates at a clock speed of up to 2.2 GHz, while the MiEM78P468L offers a lower clock speed optimized for energy efficiency. This distinction makes the N version ideal for high-performance applications, whereas the L version appeals to scenarios where power consumption is a critical consideration.

A key characteristic of both models is their multi-core architecture, supporting up to four cores. This feature allows for enhanced parallel processing, enabling the handling of multiple tasks simultaneously—a vital requirement for data-intensive applications. Moreover, the inclusion of advanced cache memory arrangements enhances data retrieval speeds significantly, ensuring that applications run smoothly without performance bottlenecks.

These processors also employ cutting-edge thermal management technologies. The dynamic voltage and frequency scaling (DVFS) capabilities ensure that performance can be adjusted in real-time based on workload requirements, helping to minimize energy consumption. This is particularly beneficial in maintaining optimal operating temperatures and prolonging the lifespan of the hardware.

Another notable feature is support for advanced security protocols. Both models incorporate hardware-based security technologies that safeguard data integrity and protect against unauthorized access. This is becoming increasingly important in today's cybersecurity landscape where businesses must prioritize protecting sensitive information.

Additionally, the IBM MiEM78P468N and MiEM78P468L processors are compatible with a wide range of operating systems, facilitating seamless integration into various IT environments. Their robust architecture supports extensive peripheral interconnect protocols, enhancing expandability and connectivity options.

In summary, the IBM MiEM78P468N and MiEM78P468L processors stand out for their performance capabilities, energy efficiency, advanced security features, and versatility. They are well-suited for organizations looking to enhance their computing power while maintaining a balance between performance and power consumption. These microprocessors are instrumental in driving innovation and efficiency in enterprise computing.
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