HD404339 Datasheet, PDF (74/80 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer with large-capacity memory

HD404339 Series
AC Characteristics (V_CC = 4.0 to 5.5 V, GND = 0 V, V_disp = V_CC – 40 V to V_CC, T_a = –20 to +75°C)
Item
Symbol Pins
Min Typ Max Unit Test Condition Note
Clock oscillation frequency f_OSC
OSC₁,
OSC₂
0.4 4
4.5 MHz System clock
1
divided by 4
X1, X2
— 32.768 — kHz
Instruction cycle time
t _cyc
t _subcyc
0.89 1
10 µs
— 244.14 — µs
1
32-kHz oscillator,
1/8 system clock
division ratio
— 122.07 — µs 32-kHz oscillator,
1/4 system clock
division ratio
Oscillation stabilization time t_RC
OSC₁,
——
7.5 ms
2
(ceramic oscillator)
OSC₂
Oscillation stabilization time t_RC
OSC₁,
——
40 ms
2
(crystal oscillator)
OSC₂
X1, X2
——
2s
2
External clock high width t_CPH
OSC₁
92 —
— ns
3
External clock low width
t _CPL
OSC₁
92 —
— ns
3
External clock rise time
t _CPr
OSC₁
——
20 ns
3
External clock fall time
t _CPf
OSC₁
——
20 ns
3
INT₀, INT₁, EVNB high
t _IH
INT₀, INT₁, 2
—
—
t _cyc /
4
widths
EVNB
t _subcyc
INT₀, INT₁, EVNB low widths t_IL
INT₀, INT₁, 2
—
—
t _cyc /
4
EVNB
t _subcyc
RESET low width
t _RSTL
RESET
2
—
—
t _cyc
5
STOPC low width
t _STPL
STOPC
1
—
—
t _RC
6
RESET rise time
t _RSTr
RESET
——
20 ms
5
STOPC rise time
t _STPr
STOPC — —
20 ms
6
Input capacitance
C_in
All input — —
30 pF f = 1 MHz,
pins except
TEST
V_in = 0 V
TEST
——
30 pF f = 1 MHz,
7
V_in = 0 V
——
180 pF
8
Notes: 1. When using the subsystem oscillator (32.768 kHz), one of the following relationships for f_OSC
must be applied.
0.4 MHz ≤ f_OSC ≤ 1.0 MHz or 1.6 MHz ≤ f_OSC ≤ 4.5 MHz
The operating range for f_OSC can be set with bit 1 of system selection register 1 (SSR1: $027).
2. The oscillation stabilization time is the period required for the oscillator to stabilize in the
following situations:
72