參數(shù)資料
型號(hào): UPD784907GF-XXX-3BA
廠商: NEC Corp.
英文描述: 16-Bit Microcontroller
中文描述: 16位微控制器
文件頁數(shù): 52/98頁
文件大?。?/td> 657K
代理商: UPD784907GF-XXX-3BA
μ
PD784907, 784908
52
Data Sheet U11680EJ2V0DS00
Hardware configuration and functions
The internal configuration of the IEBus consists mainly of the following six sections:
CPU interface section
Interrupt control section
Internal register section
Bit processing section
Field processing section
IEBus interface section
<CPU interface section>
Interfaces between the CPU (78K/IV) and the IEBus.
<Interrupt control section>
Passes interrupt request signals from the IEBus to the CPU.
<Internal register section>
Control register which stores the data in each field to control the IEBus.
<Bit processing section>
Generates and resolves the bit timing. Mainly consists of the bit sequence ROM, 8-bit preset timer, and
discriminator.
<Field processing section>
Generates each field in the communication frame. Mainly consists of the field sequence ROM, 4-bit down counter,
and discriminator.
<IEBus interface section>
Interface section of the external driver/receiver. Mainly consists of the noise filter, shift register, conflict detector,
parity detector, parity generator, and ACK/NACK generator.
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