參數(shù)資料
型號(hào): Z86E44
廠商: ZiLOG, Inc.
英文描述: CMOS Z8 OTP Microcontroller(CMOS Z8系列一次可編程微控制器)
中文描述: 檢察官辦公室的CMOS Z8微控制器(的CMOS Z8系列一次可編程微控制器)
文件頁(yè)數(shù): 29/58頁(yè)
文件大小: 388K
代理商: Z86E44
Z86E33/733/E34/E43/743/E44
CMOS Z8 OTP Microcontrollers
Zilog
DS97Z8X1500
P R E L I M I N A R Y
29
1
Port 2
(P27-P20). Port 2 is an 8-bit, bidirectional, CMOS-
compatible I/O port. These eight I/O lines can be config-
ured under software control as an input or output, indepen-
dently. All input buffers are Schmitt-triggered. Bits pro-
grammed as outputs can be globally programmed as
either push-pull or open-drain. Low EMI output buffers can
be globally programmed by the software. When used as an
I/O port, Port 2 can be placed under handshake control. Af-
ter reset, Port 2 is defined as an input.
In Handshake Mode, Port 3 lines P31 and P36 are used as
handshake control lines. The handshake direction is deter-
mined by the configuration (input or output) assigned to bit
7 of Port 2 (Figure 20).
Figure 20. Port 2 Configuration
OEN
Out
In
PAD
Port 2 (I/O)
Handshake Controls
/DAV2 and RDY2
(P31 and P36)
MCU
Auto Latch
R
500 K
Open-Drain
1.5 2.3V Hysteresis
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