AT89C5131A-RDTIM datasheet(160/186 Pages) ATMEL

160 / 186 page

160

AT89C5130A/31A-M

4337G–USB–11/06

Notes:

1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 81.), VIL =

VSS + 0.5V,

VIH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see Figure

78.).

2. Idle ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns, VIL = VSS + 0.5V, VIH = VCC -

0.5V; XTAL2 N.C; Port 0 = VCC; EA = RST = VSS (see Figure 79).

3. Power-down ICC is measured with all output pins disconnected; EA = VCC, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-

ure 80.). In addition, the WDT must be inactive and the POF flag must be set.

4. Under steady state (non-transient) conditions, IOL must be externally limited as follows:

Maximum IOL per port pin: 10 mA

Maximum IOL per 8-bit port:

Port 0: 26 mA

Ports 1, 2 and 3: 15 mA

Maximum total IOL for all output pins: 71 mA

If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater

than the listed test conditions.

Figure 78.

ICC Test Condition, Active Mode

Figure 79.

ICC Test Condition, Idle Mode

VCC

ICC

(NC)

CLOCK

SIGNAL

All other pins are disconnected.

RST

XTAL2

XTAL1

VSS

VCC

RST

XTAL2

XTAL1

VSS

VCC

ICC

(NC)

VCC

All other pins are disconnected.

CLOCK

SIGNAL

VCC

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