m66009fp Mitsumi Electronics, Corp., m66009fp Datasheet - Page 4

• Manufacturer Part Number: m66009fp
• Description: 8-bit I/o Expander With 5-bit Address
• Manufacturer: Mitsumi Electronics, Corp.

ACKNOWLEDGE BIT ACK0
Acknowledge bit ACK0 is output only when address in serial
input data is the same as that set by pins A0 thru A4. It is out-
put from pin DO as ACK0 =“0” (“L”) synchronously with CLK
8T fall.
INPUT AND OUTPUT EQUIVALENT CIRCUITS
4
DI,
A0~A4
(
Ru is built in pin DI.
Input Configuration 1
1) Pull-up resistor
Ru(
1)
CLK,
EN,
RESET
(
CLK and EN.
Input Configuration 2
2) Pull-up resistor Ru is built in pin
Ru(
2)
Output Configuration
INITIAL STATUS AFTER RESET
If “L” is input to RESET, M66009 is put in the conditions speci-
fied below:
I/O pins D0 thru D7
DO output
8-BIT I/O EXPANDER WITH 5-BIT ADDRESS
DO
Input state (“L” output state)
(Output p-channel transistor off)
“H” output state
(Output n-channel transistor off)
Input/Output Configuration
R
MITSUBISHI DIGITAL ASSP
D
: Pull-down resistor
R
D
M66009FP
D0~D7