Datasheet

CY8C21634/CY8C21534/CY8C21434
CY8C21334/CY8C21234
Document Number: 38-12025 Rev. AF Page 24 of 55
DC Analog Mux Bus Specifications
Tab le 12 lists the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75 V to 5.25 V and
–40 °C  T
A
 85 °C, 3.0 V to 3.6 V and –40 °C  T
A
 85 °C, or 2.4 V to 3.0 V and –40 °C  T
A
 85 °C, respectively. Typical parameters
are measured at 5 V, 3.3 V, or 2.7 V at 25 °C and are for design guidance only.
DC POR and LVD Specifications
Tab le 13 lists the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75 V to 5.25 V and
–40 °C  T
A
 85 °C, 3.0 V to 3.6 V and –40 °C  T
A
 85 °C, or 2.4 V to 3.0 V and –40 °C  T
A
 85 °C, respectively. Typical parameters
are measured at 5 V, 3.3 V, or 2.7 V at 25 °C and are for design guidance only.
E
2
Efficiency 35 80 – % For I load = 1mA, V
PUMP
= 2.55 V,
V
BAT
= 1.3 V,
10 µH inductor, 1 µF capacitor, and
Schottky diode
F
PUMP
Switching frequency – 1.3 – MHz
DC
PUMP
Switching duty cycle – 50 – %
Table 11. DC Switch Mode Pump (SMP) Specifications (continued)
Symbol Description Min Typ Max Units Notes
Table 12. DC Analog Mux Bus Specifications
Symbol Description Min Typ Max Units Notes
R
SW
Switch resistance to common analog bus – – 400
800
 V
DD
 2.7 V
2.4 V V
DD
2.7 V
R
VDD
Resistance of initialization switch to V
DD
– – 800 
Table 13. DC POR and LVD Specifications
Symbol Description Min Typ Max Units Notes
V
PPOR0
V
PPOR1
V
PPOR2
V
DD
value for PPOR trip
PORLEV[1:0] = 00b
PORLEV[1:0] = 01b
PORLEV[1:0] = 10b
–
–
–
2.36
2.82
4.55
2.40
2.95
4.70
V
V
V
V
DD
must be greater than or equal to
2.5 V during startup, the reset from
the XRES pin, or reset from
watchdog
V
LVD0
V
LVD1
V
LVD2
V
LVD3
V
LVD4
V
LVD5
V
LVD6
V
LVD7
V
DD
value for LVD trip
VM[2:0] = 000b
VM[2:0] = 001b
VM[2:0] = 010b
VM[2:0] = 011b
VM[2:0] = 100b
VM[2:0] = 101b
VM[2:0] = 110b
VM[2:0] = 111b
2.40
2.85
2.95
3.06
4.37
4.50
4.62
4.71
2.45
2.92
3.02
3.13
4.48
4.64
4.73
4.81
2.51
[21]
2.99
[22]
3.09
3.20
4.55
4.75
4.83
4.95
V
V
V
V
V
V
V
V
V
PUMP0
V
PUMP1
V
PUMP2
V
PUMP3
V
PUMP4
V
PUMP5
V
PUMP6
V
PUMP7
V
DD
value for pump trip
VM[2:0] = 000b
VM[2:0] = 001b
VM[2:0] = 010b
VM[2:0] = 011b
VM[2:0] = 100b
VM[2:0] = 101b
VM[2:0] = 110b
VM[2:0] = 111b
2.45
2.96
3.03
3.18
4.54
4.62
4.71
4.89
2.55
3.02
3.10
3.25
4.64
4.73
4.82
5.00
2.62
[23]
3.09
3.16
3.32
[24]
4.74
4.83
4.92
5.12
V
V
V
V
V
V
V
V
Notes
21. Always greater than 50 mV above V
PPOR
(PORLEV = 00) for falling supply.
22. Always greater than 50 mV above V
PPOR
(PORLEV = 01) for falling supply.
23. Always greater than 50 mV above V
LVD0
.
24. Always greater than 50 mV above V
LVD3
.