HCS515-I Datasheet, PDF (23/32 Pages) Microchip Technology – KEELOQ Code Hopping Decoder

HCS515
8.1.8 LEARN STATUS STRING
Standard Operating Conditions (unless otherwise specified):
Commercial (C): 0°C ≤ TA ≤ +70°C
Industrial (I):
-40°C ≤ TA ≤ +85°C
Symbol
Parameters
Min.
Typ.
Max.
Units
TDHI Command request time
—
—
500
ms
TCLA
Microcontroller command
request time
0.005
—
500
ms
TACT Decoder request acknowledge time
—
—
10
µs
TCLH Clock high hold time
1.2
ms
TCLL Clock low hold time
0.020
—
1.2
ms
TCLKH Clock high time
20
—
1000
µs
TCLKL Clock low time
20
—
1000
µs
FCLK Clock frequency
500
—
25000
Hz
TDS Data hold time
—
—
5
µs
Note: These parameters are characterized but not tested.
FIGURE 8-2: TYPICAL MICROCONTROLLER INTERFACE CIRCUIT
VDD
VDD
MCP100-450
Voltage Supervisor
VI
G
N
VO
D
HCS515
X ¹ NC
X ² NC
3 _VDD
X ⁴ S1
X ⁵ S0
6 _MCLR
X ⁷ NC
NC ¹⁴ X
NC ¹³ _X
VSS ¹²
RF_IN ¹¹
S_CLK ¹⁰
S_DAT ⁹
NC ⁸ X
RF
Receiver
10K
RST
Microcontroller
CLK
DAT
In-circuit
Programming
Probe Pads
© 2002 Microchip Technology Inc.
DS40183D-page 23