UPD78F0034A NEC, UPD78F0034A Datasheet - Page 17

• Manufacturer Part Number: UPD78F0034A
• Description: 8 Bit Single Chip Microcontroller
• Manufacturer: NEC

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4. DIFFERENCES BETWEEN µ PD78F0034A, 78F0034AY, AND MASK ROM VERSIONS
and rewriting of programs with device mounted on the target system.
those of the mask ROM versions by setting the memory size switching register (IMS).
Note
Caution There are differences in noise immunity and noise radiation between the flash memory and mask
Internal ROM structure
Internal ROM capacity
Internal high-speed RAM capacity
Minimum instruction execution time
Clock output
Buzzer output
A/D converter resolution
Mask option specification of on-chip
pull-up resistor for pins P30 to P33
IC pin
V
Electrical specifications,
recommended soldering conditions
PP
The µ PD78F0034A and 78F0034AY are products provided with a flash memory which enables writing, erasing,
The functions of the µ PD78F0034A (except the functions specified for flash memory) can be made the same as
Tables 4-1 and 4-2 show the differences between the µ PD78F0034A, 78F0034AY and the mask ROM versions.
When main system clock is selected 0.24 µ s/0.48 µ s/0.95 µ s/
When subsystem clock is selected 122 µ s (32.768 kHz)
pin
The µ PD78F0034A can be used as the flash memory version of the µ PD780024A Subseries.
ROM versions. When pre-producing an application set with the flash memory version and then mass
producing it with the mask ROM version, be sure to conduct sufficient evaluations on the
commercial samples (CS) (not engineering samples (ES)) of the mask ROM versions.
Item
Table 4-1. Differences Between µ PD78F0034A and Mask ROM Versions
Flash memory
32 KB
1,024 bytes
Minimum instruction execution time variable function incorporated
1.91 µ s/3.81 µ s
(operation at 8.38 MHz,
V
• 65.5 kHz, 131 kHz,
• 32.768 kHz
1.02 kHz, 2.5 kHz,
4.10 kHz, 8.19 kHz
(operation at 8.38 MHz
with main system clock)
10 bits
Not available
Not provided
Provided
Refer to the data sheet of individual products.
DD
262 kHz, 524 kHz,
1.05 MHz, 2.10 MHz,
4.19 MHz, 8.38 MHz
(operation at 8.38 MHz
with main system clock)
(operation at 32.768 kHz
with subsystem clock)
= 4.0 to 5.5 V)
µ PD78F0034A
Data Sheet U14040EJ4V0DS
Mask ROM
µ PD780031A: 8 KB
µ PD780032A: 16 KB
µ PD780033A: 24 KB
µ PD780034A: 32 KB
µ PD780031A: 512 bytes
µ PD780032A: 512 bytes
µ PD780033A: 1,024 bytes
µ PD780034A: 1,024 bytes
0.166 µ s/0.333 µ s/0.666 µ s/1.33 µ s/2.66 µ s
(operation at 12 MHz, V
• 93.75 kHz, 187.5 kHz, 375 kHz, 750 kHz,
• 32.768 kHz
1.46 kHz, 2.93 kHz, 5.86 kHz, 11.7 kHz
(operation at 12 MHz with main system clock)
Available
Provided
Not provided
µ PD780034A Subseries
1.25 MHz, 3 MHz, 6 MHz, 12 MHz
(operation at 12 MHz with main system clock)
(operation at 32.768 kHz with subsystem clock)
µ PD78F0034A, 78F0034AY
Mask ROM Versions
DD
= 4.5 to 5.5 V)
µ PD780024A Subseries
µ PD780021A: 8 KB
µ PD780022A: 16 KB
µ PD780023A: 24 KB
µ PD780024A: 32 KB
µ PD780021A: 512 bytes
µ PD780022A: 512 bytes
µ PD780023A: 1,024 bytes
µ PD780024A: 1,024 bytes
8 bits
Note
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