參數(shù)資料
型號(hào)： IA88C00-PLC68I-R-01
廠商： Innovasic Semiconductor
文件頁數(shù)： 59/80頁
文件大小： 0K
描述： IC MCU 8BIT 20MHZ 68PLCC
標(biāo)準(zhǔn)包裝： 285
芯體尺寸： 8-位
速度： 20MHz
連通性： EBI/EMI，UART/USART
外圍設(shè)備： DMA，WDT
輸入/輸出數(shù)： 32
程序存儲(chǔ)器類型： 外部程序存儲(chǔ)器
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 68-LCC（J 形引線）
包裝： 管件
IA88C00
Data Sheet
Microcontroller
As of Production Version -01
Copyright 2005
ENG21 1 030617-04
www.Innovasic
Innovasic.com
Innovasic Semiconductor
Page 62 of 80
1.888.824.4184
Port 2 and 3
Ports 2 and 3 provide external control inputs and outputs for the UART, handshake channels and
counter/timers. The pin assignments appear in Figure 60. Bits not used for control I/O can be configured
as general purpose I/O lines and/or external interrupt inputs.
Those bits configured for general I/O can be configured individually for input for output. Those
configured for output can be individually configured for (1) input or output and (2) open drain or push
pull output.
Figure 60. Pin Assignments for Port 2 and 3
Port 2
Bit Function
Port 3
Bit Function
0 UART receive clock
1 UART transmit
2 Reserved
3 Reserved
4 Handshake 0 input
4 Handshake 1 input/WAIT
5 Handshake 0 output
5 Handshake 1 output/DM
6 Counter 0 input
6 Counter 1 input
7 Counter 0 I/O
7 Counter 1 I/O
Port 4
Port 4 can be assigned as general I/O or as the lower address byte in de-mux mode. As general I/O, each
bit can be configured individually as input or output, with either push-pull or open-drain outputs. I/O
directions is controlled by mode control reg R246. Push-pull or open_drain selection is controlled by
mode control reg R247. All Port 4 inputs are Schmitt-triggered. Port 4 can be placed under handshake
control handshake channel 0. Port 4 register address is R212.
UART
The UART is a full-duplex asynchronous channel. It transmits and receives independently at 5 to 8 bits
per character and contains options for even- or odd-bit parity and a wake-up feature.
Data can be read into or out of the UART via R239, Bank 0. This single address is able to serve a full-
duplex channel because it contains two complete 8-bit registers, one for the transmitter and the other for
the receiver. The programming model for the UART is outlined in R235 (UART Transmit Control),
R236 (UART Receive Control), R237 (UART Interrupt Enable), R238 (Transmit Interrupt Register)
R248/249 bank 1 (UART Baud Rate Generator), R250/251 bank 1 (UART Mode A/B Registers).
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