LC876596B Datasheet, PDF (20/23 Pages) Sanyo Semicon Device – 8-Bit Single Chip Microcontroller with 96/80 KB ROM and 2048-Byte RAM On Chip

LC876596B/80B
Main system clock oscillation circuit characteristics
The characteristics in the table bellow is based on the following conditions:
1. Use the standard evaluation board SANYO has provided.
2. Use the peripheral parts with indicated value externally.
3. The peripheral parts value is a recommended value of oscillator manufacturer
Frequency
10MHz
4MHz
Table 1. Main system clock oscillation circuit characteristics using ceramic resonator
Manufacturer
Oscillator
Circuit parameters
C1 C2 Rd1
Operating
supply
voltage
range
Oscillation
stabilizing time
typ max
Notes
Murata
CSA10.0MTZ 33pF 33pF 470Ω 4.5-6.0V 0.05ms 0.2ms
CST10.0MTW (30pF) (30pF) 470Ω 4.5-6.0V 0.05ms 0.2ms Built in C1,C2
Kyocera PBRC10.00BR-A (10pF) (10pF) 1.0kΩ 4.5-6.0V 0.10ms 0.2ms Built in C1,C2
Murata
CSA4.00MG 33pF 33pF 1.5kΩ 4.5-6.0V 0.05ms 0.2ms
CST4.00MGW (30pF) (30pF) 1.5kΩ 4.5-6.0V 0.05ms 0.2ms Built in C1,C2
The oscillation stabilizing time is a period until the oscillation becomes stable after VDD becomes higher than minimum
operating voltage. (Refer to Figure4)
Subsystem clock oscillation circuit characteristics
The characteristics in the table bellow is based on the following conditions:
1. Use the standard evaluation board SANYO has provided.
2. Use the peripheral parts with indicated value externally.
3. The peripheral parts value is a recommended value of oscillator manufacturer
Table 2. Subsystem clock oscillation circuit characteristics using crystal oscillator
Frequency Manufacturer Oscillator
Circuit parameters
Operating
Oscillation
supply voltage stabilizing time Notes
C3 C4 Rf Rd2
range
typ
max
32.768MHz Seiko EPSON C-002Rx 12pF 15pF 10MΩ 680kΩ 4.5-6.0V
0.8s 2.0s
The oscillation stabilizing time is a period until the oscillation becomes stable after executing the instruction which starts the
sub-clock oscillation or after releasing the HOLD mode. (Refer to Figure4)
(Notes) • Since the circuit pattern affects the oscillation frequency, place the oscillation-related parts as close to
the oscillation pins as possible with the shortest possible pattern length.
CF1
CF2
Rd1
C1
CF
C2
Figure 1 Ceramic oscillation circuit
XT1
XT2
Rf
Rd2
C3
C4
X’tal
Figure 2 Crystal oscillation circuit
0.5VDD
Figure 3 AC timing measurement point
No.6717-20/23