EM78P568

8-bit OTP Micro-controller

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* This specification are subject to be changed without notice.

52

01/31/2004

V4.7

2.5Vref for Comparator or DAC

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Internal 2.5V ref. voltage.

2.5VREF

VDD=5V, 25 deg

2.14

2.32

2.44

V

VDD=3V, 25 deg

2.04

2.25

2.36

V

, 25 deg

5

8

%

VDD=3.0V ~ 2.7V

, 25 deg

8

15

%

Effective VDD reference for Comparator or DAC

Parameter

Symbol

Condition

Min

Typ

Max

Unit

VDD ref. voltage.

VDDref

VDD=5V ~ 2.7V,

, - 20 ~ +50 deg

VDD-

0.05

VDD-

0.02

VDD

V

(Operation current consumption for analog circuit) (Ta = 0

°C ~ 70°C, AVDD=VDD=5V±5%, VSS=0V)

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Programming tone generators

Operation current for

Programming tone

generators

I_TONE TONE1 is power on

TONE2 is power on

0.35

0.6

mA

Digital to analog converter

Operation current for DAC

I_DA

0.65

0.9

mA

Comparator

Operation current for

Comparator

I_CMP

70

120

uA

CTCSS

Operation

current

for

RX

power on

I_RX

RXPWR=1, TXPWR=0

LPFPWR=0, BPFPWR=0

0.7

1.0

mA

Operation

current

for

TX

power on

I_TX

RXPWR=0, TXPWR=1

LPFPWR=0, BPFPWR=0

0.12

0.2

mA

Operation current for LPF

power on

I_LPF

RXPWR=0, TXPWR=0

LPFPWR=1, BPFPWR=0

0.3

0.5

mA

Operation current for BPF

power on

I_BPF

RXPWR=0, TXPWR=0

LPFPWR=0, BPFPWR=1

0.3

0.5

mA

* the spec for above table not including MCU current consumption

XI. AC Electrical Characteristic

CPU instruction timing (Ta = -30

°C ~ 70°C, AVDD=VDD=5V, VSS=0V)

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Input CLK duty cycle

Dclk

45

50

55

%

Instruction cycle time

Tins

32.768kHz

3.582MHz

60

550

us

ns

Device delay hold time

Tdrh

16

ms

TCC input period

Ttcc

Note 1

(Tins+20)/N

ns

Watchdog timer period

Twdt

Ta = 25

°C

16

ms

Note 1: N= selected prescaler ratio.