ACE1501EN Fairchild Semiconductor, ACE1501EN Datasheet - Page 24

• Manufacturer Part Number: ACE1501EN
• Description: IC MCU 1KBIT EEPROM 8DIP
• Manufacturer: Fairchild Semiconductor
• Series: ACEX® 15xxr

Specifications of ACE1501EN

• Core Processor: ACE1502
• Core Size: 8-Bit
• Speed: 25MHz
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 1KB (1K x 8)
• Program Memory Type: EEPROM
• Eeprom Size: 64 x 8
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -

ACE1501 Product Family Rev. 1.1
Figure 30. Programming Protocol
13. During in-circuit programming, G5 must be either not connected or driven high.
Figure 31. Serial Data Timing
11. Brown-out/Low Battery Detect Circuit
The Brown-out Reset (BOR) and Low Battery Detect (LBD)
circuits on the ACEx microcontroller have been designed to
offer two types of voltage reference comparators. The sections
below will describe the functionality of both circuits.
Figure 32. BOR/LBD Block Diagram
SHIFT_OUT (G2)
SHIFT_OUT (G2)
SHIFT_OUT (G2)
SHIFT_IN (G4)
(in write mode)
(in read mode)
CLOCK (G1)
SHIFT_IN (G4)
LOAD (G3)
CLOCK (G1)
RESET
VCC
Vcc
G4
BL[4]
1
7
1
10-bit Opcode = 0x34B
0
t
1
T
DIS
reset
Adjust Reference Voltage
BL[3]
0
6
0
1
Valid
t
ACCESS
t
0
DOS
t
HI
BL[2]
1
t
0
1
DIH
5
S
1
A: start of programming cycle
A
Valid
13
bit 31
BL[1]
4
t
t
DOH
LO
BL[0]
bit 30
3
32 clock pulses
+1.8V
Vref
24
VSEL
2
+
_
bit 0
+
_
LBD
BOR
X
1
t
load1
t
load2
LBD
0
2nd clock pulse
BUSY low by
Register
Control
LBD
BUSY
to RESET logic
t
ready
READY
t
load3
www.fairchildsemi.com
t
load4
A
bit 31