Technics MT5634SMI-34 manual Timing Requirements, Handling Precautions, Electrical Characteristics

Chapter 3 – Electrical Characteristics

3.3V Parallel – Standard (SMI) and Industrial Temperature (SMI-ITP) Build Options

Electrical characteristics for Parallel MT5634SMI SocketModem devices are presented below. 3.3 Vdc Characteristics (TA = –40 °C to 85 °C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V

Digital Inputs	Input High	Input Low
–DS (40)	Min 2.52 V	Max 0.9 V
Digital Inputs (hysteresis input buffer)	Input High	Input Low
A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)	Min 2.52 V	Max 0.9 V
Digital Input/Output	Input High	Input Low
Output buffer can source 12 mA at 0.4 V
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6	Min 2.52 V	Max 0.9 V
(41), D7 (27)
Digital Output	Output High	Output Low	Current Drive
INT (30)	Min 2.3 V	Max 0.4 V	2 ma
Digital Input Capacitance			5 PF

Timing Requirements

Timing Requirements for Parallel Write

Parameter	Min	Max	Unit
–DS to –WR Setup (low to low)	10	-	ns
A0, A1, A2 to –WR Setup (valid to low)	15	-	ns
–WR Pulse Width (low to high)	40	-	ns
D0–D7 to –WR Setup (valid to high)	30	-	ns
–WR to –DS hold (high to high)	0	-	ns
–WR to A0–A2 Hold (high to invalid)	0	-	ns
–WR to D0–D7 Hold (high to invalid)	0	-	ns
–WR interaccess (high to low)
Non-MIMIC Accesses	10	-	ns
MIMIC Accesses	110	-	ns

Timing Requirements for Parallel Read

Parameter	Min	Max	Unit
–DS to –RD Setup (low to low)	10	-	ns
A0, A1, A2 to –RD Setup (valid to low)	15	-	ns
–RD Pulse Width (low to high)	40	-	ns
–RD to –DS hold (high to high)	0	-	ns
–RD to A0–A2 Hold (high to invalid)	0	-	ns
–WR interaccess (high to low)
Non-MIMIC Accesses	10	-	ns
MIMIC Accesses	110	-	ns

Handling Precautions

All MOS devices must be handled with certain precautions to avoid damage due to the accumulation of static charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of this static buildup, proper precautions should be taken to avoid exposure to electrostatic discharge during handling and mounting.

SocketModem Global MT5634SMI Developer’s Guide 15