Cypress EZ-BLE PRoC CYBL11172-56LQXI, Руководство пользователя

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Document Number: 002-02521 Rev. *F Page 21 of 39
CYBLE-012011-00
CYBLE-012012-10
Pulse Width Modulation (PWM)
LCD Direct Drive
Table 24. PWM DC Specifications
Parameter Description Min Typ Max Units Details/Conditions
I
PWM1
Block current consumption at 3 MHz – – 42 µA 16-bit PWM
I
PWM2
Block current consumption at 12 MHz – – 130 µA 16-bit PWM
I
PWM3
Block current consumption at 48 MHz – – 535 µA 16-bit PWM
Table 25. PWM AC Specifications
Parameter Description Min Typ Max Units Details/Conditions
T
PWMFREQ
Operating frequency F
CLK
– 48 MHz
T
PWMPWINT
Pulse width (internal) 2 × T
CLK
– – ns
T
PWMEXT
Pulse width (external) 2 × T
CLK
– – ns
T
PWMKILLINT
Kill pulse width (internal) 2 × T
CLK
– – ns
T
PWMKILLEXT
Kill pulse width (external) 2 × T
CLK
– – ns
T
PWMEINT
Enable pulse width (internal) 2 × T
CLK
– – ns
T
PWMENEXT
Enable pulse width (external) 2 × T
CLK
– – ns
T
PWMRESWINT
Reset pulse width (internal) 2 × T
CLK
– – ns
T
PWMRESWEXT
Reset pulse width (external) 2 × T
CLK
– – ns
Table 26. LCD Direct Drive DC Specifications
Parameter Description Min Typ Max Units Details/Conditions
I
LCDLOW
Operating current in low-power mode – 17.5 – µA 16 × 4 small segment
display at 50 Hz
C
LCDCAP
LCD capacitance per segment/common driver – 500 5000 pF
LCD
OFFSET
Long-term segment offset – 20 – mV
I
LCDOP1
LCD system operating current
V
BIAS
= 5 V
– 2 – mA 32 × 4 segments. 50 Hz
at 25 °C
I
LCDOP2
LCD system operating current
V
BIAS
= 3.3 V
– 2 – mA 32 × 4 segments
50 Hz at 25 °C
Table 27. LCD Direct Drive AC Specifications
Parameter Description Min Typ Max Units Details/Conditions
F
LCD
LCD frame rate 10 50 150 Hz