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M38258MCM Datasheet, PDF (61/70 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER | |||
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MITSUBISHI MICROCOMPUTERS
3825 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 38. Timing reguirements 1 (Low power source Version)
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = â20 to 85°C, unless otherwise noted.)
Symbol
Parameter
tw(RESET) Reset input âLâ pulse width
tc(XIN)
Main clock input cycle time (XIN input)
twH(XIN)
Main clock input âHâ pulse width
twL(XIN)
Main clock input âLâ pulse width
tc(CNTR)
CNTR0, CNTR1 input cycle time
twH(CNTR) CNTR0, CNTR1 input âHâ pulse width
twL(CNTR) CNTR0, CNTR1 input âLâ pulse width
twH(INT)
INT0 to INT3 input âHâ pulse width
twL(INT)
INT0 to INT3 input âLâ pulse width
tc(SCLK)
Serial I/O clock input cycle time (Note)
twH(SCLK)
Serial I/O clock input âHâ pulse width (Note)
twL(SCLK)
Serial I/O clock input âLâ pulse width (Note)
tsu(RXDâSCLK) Serial I/O input set up time
th(SCLKâRXD) Serial I/O input hold time
Note : When f(XIN) = 8 MHz and bit 6 of address 001A16 is â1â (Clock synchronous).
Divide this value by four when f(XIN) = 8 MHz and bit 6 of address 001A16 is â0â (UART).
Table 39. Timing reguirements 2 (Low power source Version)
(VCC = 2.2 to 4.0 V, VSS = 0 V, Ta = â20 to 85°C, unless otherwise noted.)
Symbol
tw(RESET)
tc(XIN)
twH(XIN)
twL(XIN)
tc(CNTR)
twH(CNTR)
Parameter
Reset input âLâ pulse width
Main clock input cycle time (XIN input)
Main clock input âHâ pulse width
Main clock input âLâ pulse width
CNTR0, CNTR1 input cycle time
CNTR0, CNTR1 input âHâ pulse width
twL(CNTR) CNTR0, CNTR1 input âLâ pulse width
twH(INT)
twL(INT)
tc(SCLK)
twH(SCLK)
twL(SCLK)
tsu(RXDâSCLK)
th(SCLKâRXD)
INT0 to INT3 input âHâ pulse width
INT0 to INT3 input âLâ pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock input âHâ pulse width (Note)
Serial I/O clock input âLâ pulse width (Note)
Serial I/O input set up time
Serial I/O input hold time
Note: When f(XIN) = 8 MHz and bit 6 of address 001A16 is â1â (Clock synchronous).
Divide this value by four when f(XIN) = 8 MHz and bit 6 of address 001A16 is â0â (UART).
Limits
Unit
Min. Typ. Max.
2
µs
125
ns
45
ns
40
ns
250
ns
105
ns
105
ns
80
ns
80
ns
800
ns
370
ns
370
ns
220
ns
100
ns
Limits
Unit
Min.
Typ. Max.
2
µs
125
ns
45
ns
40
ns
900 /
(VCC â 0.4)
ns
450 /
ns
(VCC â 0.4) â 20
450 /
(VCC â 0.4) â 20
ns
230
ns
230
ns
2000
ns
950
ns
950
ns
400
ns
200
ns
61
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