PIC18F4523-E/PT Microchip Technology, PIC18F4523-E/PT Datasheet - Page 35

• Manufacturer Part Number: PIC18F4523-E/PT
• Description: 32KB, Flash, 1536bytes-RAM, 36I/O, 8-bit Family,nanoWatt 44 TQFP 10x10x1mm TRAY
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4523-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.0
TABLE 3-1:
REGISTER 3-1:
© 2009 Microchip Technology Inc.
3FFFFEh DEVID1
3FFFFFh DEVID2
Legend:
Note 1:
bit 7
Legend:
R = Read-only bit
-n = Value when device is unprogrammed
bit 7-4
bit 3-0
Note:
DEV3
File Name
2:
R
SPECIAL FEATURES OF THE
CPU
x = unknown, u = unchanged, — = unimplemented. Shaded cells are unimplemented, read as ‘0’.
DEVID registers are read-only and cannot be programmed by the user.
See Register 3-1 and Register 3-2 for DEVID1 and DEVID2 values.
For additional details on the Configuration
bits, refer to Section 23.1 “Configuration
Bits” in the “PIC18F2420/2520/4420/4520
Data Sheet” (DS39631). Device ID informa-
tion presented in this section is for the
PIC18F2423/2523/4423/4523 devices only.
DEV<3:0>: Device ID bits
1101 = PIC18F4423
1001 = PIC18F4523
0101 = PIC18F2423
0001 = PIC18F2523
REV<3:0>: Revision ID bits
These bits are used to indicate the device revision.
DEVICE IDs
(1)
(1)
DEV2
R
DEVID1: DEVICE ID REGISTER 1 FOR PIC18F2423/2523/4423/4523
DEV11
DEV3
Bit 7
P = Programmable bit
DEV10
DEV2
Bit 6
DEV1
R
DEV1
DEV9
Bit 5
PIC18F2423/2523/4423/4523
DEV0
R
DEV0
DEV8
Bit 4
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
REV3
DEV7
REV3
3.1
The Device ID registers are read-only registers. They
identify the device type and revision for device pro-
grammers and can be read by firmware using table
reads.
Bit 3
R
Device ID Registers
REV2
DEV6
Bit 2
REV2
R
REV1
DEV5
Bit 1
REV1
REV0
DEV4
Bit 0
R
DS39755C-page 35
Unprogrammed
xxxx xxxx
xxxx xxxx
Default/
Value
REV0
R
bit 0
(2)
(2)