Rev. 1.00

3

April 12, 2013

HT6P237A/HT6P247A

Pin Description

Pin No.

Pin Name

I/O

Internal

Connection

Description

1~2

B1~B0

I

CMOS IN

Compound pin – D0~D3 for B0 and D1~D2 for B1 in HT6P247A

Compound pin – D0~D1 for B0 in HT6P237A

3~4

BTS1~BTS0

I

CMOS IN

width types

5

OPS

I

CMOS IN

one of 3 power output levels

6

VDD

P

—

Positive power supply

7/15

VSS

P

—

Negative power supply, ground

Pin 15 in the HT6P237A should be grounded

8

PAOUT

O Power Amplify

Output

L/C matching circuit

9

PVSS

P

—

RF negative power supply, ground

10

XIN

I

Oscillator

13.56MHz Crystal oscillator input for 433.92MHz RF

11

XOUT

O

Oscillator

13.56MHz Crystal oscillator output for 433.92MHz RF

12

DOUT

O

CMOS OUT Encoder data out

13~16 D0~D3

I

CMOS IN

Data input and transmission enable; active low

16

BTSGS

(HT6P237A only) I

CMOS IN

Bit time group select

0: Bit time group 1

1: Bit time group 2

This pin must be either high or low and not allowed to float

Approximate Internal Connections

CM OS IN /O UT

CM OS O UT

CM OS I N Pu ll -h ig h

Os ci ll at or