HD404054 Datasheet, PDF (93/101 Pages) Hitachi Semiconductor – HMCS400-series microcomputers designed to increase program productivity with large-capacity memory

HD404054 Series/HD404094 Series
Item
Symbol Pin(s)
Min Typ Max Unit Test Condition
Notes
Input capacitance C_in
All pins except —
D₁₃ D₄–D₇
D₄–D₇
—
D13
—
— 15 pF f = 1 MHz, V_in = 0 V
— 30 pF f = 1 MHz, V_in = 0 V
— 15 pF f = 1 MHz, V_in = 0 V:
HD404052, HD404054,
HD404092, HD404094,
HD40A4052,HD40A4054
—
— 180 pF f = 1 MHz, V_in = 0 V:
HD4074054, HD4074094
Analog comparator t_CSTB
stabilization time
COMP₀,
COMP₁
—
—2
t_cyc V_CC = 2.7 V to 5.5 V:
9
HD4074054, HD4074094
V_CC = 2.7 V to 6.0 V:
HD404052, HD404054,
HD404092, HD404094
—
—4
t_cyc V_CC = 4.0 V to 6.0 V:
11
HD40A4052,HD40A4054
—
— 20 t_cyc V_CC = 1.8 V to 2.7 V:
HD404052, HD404054,
HD404092, HD404094
Notes: 1. Applies to HD404052, HD404054, HD4074054, HD404092, HD404094, HD4074094.
2. Applies to HD40A4052, HD40A4054.
3. SEL = 1
4. SEL = 0
5. The oscillation stabilization time is the period required for the oscillator to stabilize after V_CC
reaches 2.7 (HD4074054, HD4074094)/1.8 (HD404052, HD404054, HD404092, HD404094) /4.0
(HD40A4052, HD40A4054)V at power-on, or after RESET input goes low or STOPC input goes
low when stop mode is cancelled. At power-on or when stop mode is cancelled, RESET or
STOPC must be input for at least t_RC to ensure the oscillation stabilization time. If using a
ceramic oscillator, contact its manufacturer to determine what stabilization time is required, since
it will depend on the circuit constants and stray capacitance.
6. Applies to ceramic oscillator only.
7. Refer to figure 68.
8. Refer to figure 69.
9. Refer to figure 70.
10. Refer to figure 71.
11. Analog comparator stabilization time is the period for the analog comparator to stabilize and for
correct data to be read after entering RD₀/COMP₀, RD₁/COMP₁ into analog input mode.
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