8-BIT PARALLEL DATA INTERFACE
MITSUBISHI
M54610P
8-BIT PARALLEL DATA INTERFACE FOR PRINTER
DESCRIPTION
The M54610P is a semico...
Description
MITSUBISHI
M54610P
8-BIT PARALLEL DATA INTERFACE FOR PRINTER
DESCRIPTION
The M54610P is a semiconductor integrated circuit consisting of an 8-bit parallel data interface function.
PIN CONFIGURATION (TOP VIEW)
Buffer 1 input BI1 → BO2 ← BI2 → BO5 ← BI3 → GND
1 2 3 4 5 6 7 8 9
42
VCC Buffer 5 input Buffer 3 output
FEATURES
q I/O electrical characteristics equivalent to LSTTL q 3-state 8-bit data output q Strobe signal with polarity switching input q Wide operating temperature range Ta = -20 – +75°C
Buffer 2 output Buffer 2 input Buffer 5 output Buffer 3 input
41 ← BI5 40 → BO3
39 → RDY READY output 38 ← BI4
Buffer 4 input
37 → BSYF BUSY flag output 36 ← EBSY Ext. BUSY input 35
GND
APPLICATION
Printer
Buffer 4 output Buffer 1 output
BO4 ← BO1 ←
FUNCTION
The M54610P, when used in a printer, is capable of implementing a standard 8-bit parallel data interface. As shown in the timing diagram, printing data DIN 1 through 8 and strobe pulses STB are input from a host computer. Data are exchanged by outputing the BUSY and ACK (ACKNOWLEDGE) signals to the host computer. Control signals EBSY, CS, WR, RD and ACKI are input from a printer controller, and this IC outputs DOU 1 through 8, and BSYF.
BUSY output BUSY ← ACKNOWLEDGE output
34 ← BSSL BUSY select input 33 ← ACKI ACKNOWLEDGE
input
ACK ← 10 DIN8 → 11 DIN7 → 12 DIN6 → 13 DIN5 → 14
M54610P
32 ← CS 31 ← WR 30 ← RD 29 → DOU8 28 → DOU7 27 → DOU6 26 → DOU5 25 → DOU4 24 → DOU3 23 → DOU2 22 → DOU1
...
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