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SERC816

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23
SERCON816
10/23
Typical current consumption: measured at 5V (VCC/VDD) and 25°C
3.5 AC Electrical Characteristics
(C
load
= 50 pF, V
DD
= 5 V ± 5% T
amb
= -40 °C to +85 °C)
3.5.1 Clock Input MCLK
Figure 5. Timing of clock MCLK and related outputs
Mode
f
SCLK
(MHz) f
MCLK
(MHz)
Current (mA)
410B 64 32 30
816 64 32 80
Symbol Parameter Min. Typ. Max. Unit
f
MCLK
Clock frequency MCLK 12 64 MHz
t
MCLK0
MCLK low 6 ns
t
MCLK1
MCLK high 6 ns
t
MCLD
Output delay rising edge MCLK to DMAREQR/T, CON_CLK,
DIV_CLK
20 ns
f
MCLK
Baudrate 2 Mbit/s 12 64 MHz
f
MCLK
Baudrate 4 Mbit/s 12 64 MHz
MCLK
1
/
f
MCLK
t
MCLK0
t
MCLD
t
MCLK1
DMAREQR/T
CON_CLK,
DIV_CLK
11/23
SERCON816
3.5.2 Clock Input SCLK
Figure 6. Timing of Clock SCLK
3.5.3 Address Latch
Figure 7. Address Latch
Symbol Parameter Min. Typ. Max. Unit
f
SCLK
Clock frequency SCLK
PLL used (SBAUD16=0) 32 64 MHz
PLL unused (SBAUD16=1) 64 MHz
t
SCLK0
SCLK low 6 ns
t
SCLK1
SCLK high 6 ns
Symbol Parameter Min. Typ. Max. Unit
T
ALEW
Pulse width ALEL, ALEH 10 ns
T
ALESU
Setup time D15-0 to falling edge ALEH, ALEL 5 ns
T
ALEHD
hold time falling edge ALEH, ALEL to D15-0 5 ns
t
DA
Delay from D15-0 to A15-0 20 ns
SCLK
1
/
f
SC L K
t
SC LK 0
t
SC L K1
ALEH, ALEL
D15-0
A15-0
t
DA
t
ALEW
t
A L ESU
t
ALEHD
SERCON816
12/23
3.5.4 Read Access of Control Registers
Figure 8. Read Access of Control Registers
Note: 1. Setup time input signals to falling edge RDN (Intel or Motorola mode with low active strobe) or rising edge RDN (Motorola mode
with high active strobe)
Symbol Parameter Min. Typ. Max. Unit
t
ASU
Setup time A6-0, (Note 1) 10 ns
Setup time BHEN, PCSN0, PCS1, DMAACKNR, WRN (only
Motorola mode),
(Note 1)
0ns
t
AHD
Hold time A6-0, BHEN, PCSN0, PCS1, DMAACKNR, WRN
(only Motorola mode) to rising edge RDN (Intel Motorola
mode with low active strobe) or falling edge RDN (Motorola
mode with high active strobe)
0ns
t
PAD
Access time A6-0, BHEN, PCSN0, PCS1, DMAACKNR,
WRN (only Motorola mode) to D15-0 valid
30 ns
t
PRDD
Access time RDN to D15-0 valid 30 ns
t
RDZ
Delay RDN to D15-0 high-Z 20 ns
t
PRQ
Delay RDN to DMAREQR low 20 ns
A6-0, BHEN
PCSN0, PCS1,
DMAACKNR,
WRN (Motorola mode)
RDN
D15-0
DMAREQR
t
PAD
t
PRQ
t
RD Z
t
PRDD
t
AHD
t
ASU
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23

SERC816

Mfr. #:
Buy SERC816
Manufacturer:
STMicroelectronics
Description:
Telecom Interface ICs SERCOS Interfce Cont
Lifecycle:
New from this manufacturer.
Delivery:
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