M38258MCM Datasheet, PDF (62/70 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3825 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 40. Switching characteristics 1 (Low power source version)
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted.)
Symbol
Parameter
Limits
Unit
Min.
Typ.
Max.
twH(SCLK)
twL(SCLK)
td(SCLK–TXD)
tv(SCLK–TXD)
tr(SCLK)
tf(SCLK)
tr(CMOS)
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)
tc(SCLK)/2–30
tc(SCLK)/2–30
–30
10
ns
ns
140
ns
ns
30
ns
30
ns
30
ns
tf(CMOS)
CMOS output falling time (Note 2)
10
30
ns
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.
Table 41. Switching characteristics 2 (Low power source version)
(VCC = 2.2 to 4.0 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted.)
Symbol
Parameter
Limits
Unit
Min.
Typ.
Max.
twH(SCLK)
twL(SCLK)
td(SCLK–TXD)
tv(SCLK–TXD)
tr(SCLK)
tf(SCLK)
tr(CMOS)
tf(CMOS)
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)
tc(SCLK)/2–50
tc(SCLK)/2–50
–30
20
20
ns
ns
350
ns
ns
50
ns
50
ns
50
ns
50
ns
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.
Measurement output pin
100 pF
CMOS output
Fig. 44 Circuit for measuring output switching characteristics
Measurement output pin
1 kΩ
100 pF
N-channel open-drain output (Note)
Note : When bit 4 of the UART
control register (address 001B16) is “1”.
(N-channel open-drain output mode)
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