参数资料
型号: IA88C00-PDW48C
厂商: Innovasic Semiconductor
英文描述: Microcontroller
中文描述: 微控制器
文件页数: 14/80页
文件大小: 707K
代理商: IA88C00-PDW48C
IA88C00
Microcontroller
Data Sheet
As of Production Version -01
Copyright
2005 ENG 21 0 050519-00 www.Innovasic
Innovasic.com
Innovasic Semiconductor
Page 14 of 80 1.888.824.4184
XTAL1, XTAL2
(
Crystal oscillator
input
)
All port pins are configured as inputs (high impedance) during RESET, except for Port 1 and Port 0. Port
1 is configured as a multiplexed address/ data bus. Port 0 pins P00-P04 are configured as address out. And
pins P05-P07 are configured as inputs.
Registers
Crystal inputs for the internal oscillator.
The IA88C00 supports a 256-byte register address space. Addresses 00H-BFH contain two sets of
registers. Set one contains control registers that are only accessible by register direct commands. Set two
contains data registers that are only available via register indirect, indexed, stack and DMA commands,
Note that address space E0H to FFH in Set one is further divided into two banks. The state of bank select
bit in the Flag register determines which bank is accessed.
The register space is shown in Figure 7.
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