
1-50
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3822 Group
Measurement output pin
100 pF
CMOS output
Note : When bit 4 of the UART
control register (address 001B 16) is “1”.
(N-channel open-drain output mode)
N-channel open-drain output (Note)
1 k
100 pF
Measurement output pin
SWITCHING CHARACTERISTICS 1(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85
°C, unless otherwise noted.
Notes 1 : When the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”.
2 : XOUT and XCOUT pins are excluded.
Serial I/O clock output “H” pulse width
Serial I/O clock output “L” pulse width
Serial I/O output delay time (Note 1)
Serial I/O output valid time (Note 1)
Serial I/O clock output rising time
Serial I/O clock output falling time
CMOS output rising time (Note 2)
CMOS output falling time (Note 2)
140
30
Symbol
Parameter
Limits
Min.
ns
Unit
tc(SCLK)
–30
10
Typ.
Max.
twH(SCLK)
twL(SCLK)
td(SCLK–TXD)
tv(SCLK–TXD)
tr(SCLK)
tf(SCLK)
tr(CMOS)
tf(CMOS)
Extended operating temperature version : VCC = 3.0 to 5.5 V, Ta = –40 to –20
°C and VCC = 2.5 to 5.5 V, Ta = –20 to 85°C)
Fig. 43 Circuit for measuring output switching characteristics (1)
SWITCHING CHARACTERISTICS 2 (VCC = 2.5 to 4.0 V, VSS = 0 V, Ta = –20 to 85
°C, unless otherwise noted.
Notes 1 : When the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”.
2 : XOUT and XCOUT pins are excluded.
Extended operating temperature version : VCC = 3.0 to 5.5 V, Ta = –40 to –20
°C and VCC = 2.5 to 5.5 V, Ta = –20 to 85°C)
Serial I/O clock output “H” pulse width
Serial I/O clock output “L” pulse width
Serial I/O output delay time (Note 1)
Serial I/O output valid time (Note 1)
Serial I/O clock output rising time
Serial I/O clock output falling time
CMOS output rising time (Note 2)
CMOS output falling time (Note 2)
350
50
Symbol
Parameter
Limits
Min.
ns
Unit
tc(SCLK)/2–50
–30
20
Max.
twH(SCLK)
twL(SCLK)
td(SCLK–TXD)
tv(SCLK–TXD)
tr(SCLK)
tf(SCLK)
tr(CMOS)
tf(CMOS)
Typ.