EM78P468N/EM78P468L

8-Bit Microcontroller

6.1.5R4/RSR (RAM Select Register)

(Address: 04h)

Bit 7

 

Bit 6

 

Bit 5

 

Bit 4

 

Bit 3

 

Bit 2

 

Bit 1

 

Bit 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RBS1

 

RBS0

 

RSR5

 

RSR4

 

RSR3

 

RSR2

 

RSR1

 

RSR0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bits 7 ~ 6 (RBS1 ~ RBS0): determine which bank is activated among the four banks. See the data memory configuration in Fig. 6-2. Use the BANK instruction (e.g. BABK 1) to change banks.

Bits 5 ~ 0 (RSR5 ~ RSR0): used to select up to 64 registers (Address: 00~3F) in indirect addressing mode. If no indirect addressing is used, the RSR can be used as an 8-bit general purpose read/writer register.

6.1.6R5/Port 5 (Port 5 I/O Data and Page of Register Select

(Address: 05h)

Bit 7

 

Bit 6

Bit 5

 

Bit 4

Bit 3

 

Bit

2

Bit 1

 

Bit 0

 

 

 

 

 

 

 

 

 

 

 

 

 

R57

 

R56

R55

 

R54

−

−

 

−

 

IOCPAGE

 

 

 

 

 

 

 

 

 

 

 

 

 

Bits 7~4: 4-bits I/O registers of Port 5

User can use the IOC50 register to define each bit either as input or output. Bits 3~1: Not used

Bit 0 (IOCPAGE): change IOC5 ~ IOCF to another page IOCPAGE = “0” : Page 0 (select register of IOC 50 to IOC F0) IOCPAGE = “1” : Page 1 (select register of IOC 61 to IOC E1)

6.1.7R6/Port 6 (Port 6 I/O Data Register)

(Address: 06h)

Bit 7

 

Bit 6

 

Bit 5

 

Bit 4

 

 

 

 

 

 

 

 

 

R67

 

R66

 

R65

 

R64

 

 

 

 

 

 

 

 

 

Bit 3

R63

 

Bit 2

 

Bit 1

 

Bit 0

 

 

 

 

 

 

 

R62

 

R61

 

R60

 

 

 

 

 

 

Bits 7~0: 8-bit I/O registers of Port 6

User can use the IOC60 register to define each bit either as input or output.

6.1.8R7/Port 7 (Port 7 I/O Data Register)

(Address: 07h)

Bit 7

Bit 6

 

Bit 5

Bit 4

Bit 3

Bit 2

 

Bit 1

Bit 0

 

 

 

 

 

 

 

 

 

 

 

 

R77

R76

R75

R74

R73

R72

R71

R70

 

 

 

 

 

 

 

 

 

 

Bits 7~0: 8-bit I/O registers of Port 7

User can use the IOC70 register to define each bit either as input or output.

Product Specification (V1.5) 02.15.2007

• 9

(This specification is subject to change without further notice)

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IBM MiEM78P468N, MiEM78P468L manual 5 R4/RSR RAM Select Register, 6 R5/Port 5 Port 5 I/O Data and Page of Register Select
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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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