Epson S1C31D50 Technical Instructions page 446

OSC1 oscillator circuit characteristics
Unless otherwise specified: VDD = 1.8 to 5.5 V, VSS = 0 V, Ta = 25 °C
Item
Crystal oscillator
oscillation start
time *1
Crystal oscillator
internal gate capacitance
Crystal oscillator
internal drain capacitance
Crystal oscillator
oscillator circuit
current - oscillation inverter
drivability ratio *1
Crystal oscillator
oscillation stop detector current
Internal oscillator
oscillation start
time
Internal oscillator
oscillation frequency
*1 CLGOSC1.CGI1[2:0] bits = 0x0, Crystal resonator = C-002RX (manufactured by Seiko Epson Corporation, R1 = 50 kW (Max.), CL = 7 pF)
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
Symbol Condition
t CLGOSC1.OSC1SELCR bit = 0,
sta1C
CLGOSC1.INV1N[1:0] bits = 0x1,
CLGOSC1.INV1B[1:0] bits = 0x2,
CLGOSC1.OSC1BUP bit = 1
C CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
GI1C
bits = 0x0
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x1
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x2
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x3
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x4
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x5
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x6
CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.CGI1[2:0]
bits = 0x7
C CLGOSC1.OSC1SELCR bit = 0,
DI1C
I CLGOSC1.OSC1SELCR bit = 0,
OSC1C
CLGOSC1.INV1N/INV1B[1:0] bits = 0x0
CLGOSC1.OSC1SELCR bit = 0,
CLGOSC1.INV1N/INV1B[1:0] bits = 0x1 (reference)
CLGOSC1.OSC1SELCR bit = 0,
CLGOSC1.INV1N/INV1B[1:0] bits = 0x2
CLGOSC1.OSC1SELCR bit = 0,
CLGOSC1.INV1N/INV1B[1:0] bits = 0x3
I CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.OSDEN bit
OSD1C
= 1
t CLGOSC1.OSC1SELCR bit = 1
sta1I
f CLGOSC1.OSC1SELCR bit = 1
OSC1I
Seiko Epson Corporation
Min. Typ. Max. Unit
– – 3
– 12 – pF
– 14 – pF
– 16 – pF
– 18 – pF
– 19 – pF
– 21 – pF
– 23 – pF
– 24 – pF
– 6 – pF
– 70 – %
– 100 – %
– 130 – %
– 300 – %
– 0.025 0.1 µA
– – 100 µs
31.04 32 32.96 kHz
s
23-7